Editor-in-Chief for the following Journals

• Abstract and Applied Analysis (2006-2011)

• Advances in Dynamical Systems and Applications (since Oct 2005)

• International Journal of Difference Equations (since Oct 2005)

• Difference Equations and Discrete Dynamical Systems - An Electronic Newsletter (2005-2008)

Associate Editor for the following Journals

• Abstract and Applied Analysis (since Oct 2006)

• Advances in Theoretical and Applied Mathematics (since Nov 2005)

• Advances in Difference Equations (since Jul 2003)

• Applied Mathematical and Computational Sciences (since Dec 2009)

• Applied Mathematics and Information Sciences (since Jul 2011)

• Archive of Inequalities and Applications (since Jul 2003)

• Cankaya University Journal of Science and Engineering (since Jan 2010)

• Communications in Mathematical Analysis (old site) (since Aug 2005)

• Contemporary Analysis and Applied Mathematics (since Dec 2011)

• Differential Equations and Dynamical Systems (since Mar 2011)

• Fariman Journal of Pure and Applied Mathematics (since Mar 2010)

• Global Journal of Pure and Applied Mathematics (since May 2005)

• Hikari Ltd (Advisory Board Member, since March 2013)

• International Electronic Journal of Pure and Applied Mathematics (since Jun 2010)

• International Journal of Applied Mathematics and Statistics (since Jan 2008)

• International Journal of Dynamical Systems and Differential Equations (since May 2006)

• International Journal of Mathematics and Mathematical Sciences (since Apr 2006)

• International Journal of Mathematics and Statistics (since Jun 2007)

• International Journal of Modern Mathematics (since Jan 2006)

• International Journal of Nonlinear Analysis and Applications (since Dec 2009)

• International Journal of Nonlinear Operators Theory and Applications (since Oct 2005)

• International Journal of Scientific and Innovative Mathematical Research (since Apr 2013)

• International Journal of Statistika and Mathematika (since Jul 2012)

• Involve - A Journal of Mathematics (since Jan 2008)

• Journal of Abstract Differential Equations and Applications (since Mar 2010)

• Journal of Applied & Computational Mathematics (since Nov 2012)

• Journal of Business & Management (since Jun 2013)

• Journal of Computational Analysis and Applications (since Sep 2011)

• Journal of Inequalities and Applications (since Jul 2003)

• Journal of Mathematical and Computational Science (since Nov 2011)

• Journal of Mathematics and Statistics (since Aug 2012)

• Journal of Nonlinear Evolution Equations and Applications (since May 2011)

• Journal of Reviews on Global Economics (since Nov 2012)

• Journal of Scientific Research and Reports (since Feb 2013)

• Karaelmas Science and Engineering Journal (since Feb 2011)

• Konuralp Journal of Mathematics (since Aug 2012)

• Malaya Journal of Matematik (since Aug 2012)

• Mathematical Inequalities and Applications (since Dec 2008)

• Mathematical Research Publishers / E-Book Series (since Mar 2010)

• Mathematica Aeterna (since Jan 2011)

• Mathematica Moravica (since Jun 2010)

• Nonlinear Dynamics and Systems Theory (since Nov 2006)

• Pure Mathematical Sciences (since Feb 2012)

• Selcuk Journal of Applied Mathematics (since Feb 2004)

• The African Diaspora Journal of Mathematics (since Feb 2012)

• The Journal of Nonlinear Sciences and Applications (Honorary Chairman, since Aug 2010)

• Theoretical Mathematics and Applications (Since May 2011)

Guest Editor for the following Journals

• Computers and Mathematics with Applications

• Dynamic Systems and Applications

• Journal of Applied Mathematics

• Journal of Computational and Applied Mathematics

• Journal of Difference Equations and Applications

Reviewer for the following Journals

• Acta Applicanda Mathematicae

• Acta Mathematica Applicatae Sinica (English Series)

• Acta Mathematica Scientia

• Acta Mathematica Vietnamica

• Advances in Difference Equations

• African Diaspora Journal of Mathematics

• American Mathematical Monthly

• Analele Stiintifice ale Universitatii Ovidius Constanta

• Analysis

• Analysis and Applications

• Annales Polonici Mathematici

• Annali di Matematica

• Annali di Matematica Pura ed Applicata

• Annals of the Alexandru Ioan Cuza University - Mathematics

• ANZIAM Journal

• Applicable Analysis and Discrete Mathematics

• Applications and Applied Mathematics

• Applied Mathematical Modelling

• Applied Mathematics. A Journal of Chinese Universities. Series A.

• Applied Mathematics and Computation

• Applied Mathematics Letters

• Arabian Journal for Science and Engineering

• Arab Journal of Mathematical Sciences

• Archiv der Mathematik

• Archive of Inequalities and Applications

• Arkiv för Matematik

• Australian Journal of Mathematical Analysis and Applications

• Boundary Value Problems

• British Journal of Mathematics and Computer Science

• Bulletin of Mathematical Analysis and Applications

• Bulletin of the Institute of Mathematics, Academia Sinica New Series

• Bulletin of the Iranian Mathematical Society

• Bulletin of the Malaysian Mathematical Sciences Society

• Canadian Mathematical Bulletin

• Canadian Applied Mathematics Quarterly

• Carpathian Journal of Mathematics

• Central European Journal of Mathematics

• Chaos, Solitons & Fractals

• Communications in Mathematical Analysis

• Communications in Nonlinear Science and Numerical Simulation

• Computers and Mathematics with Applications

• Constructive Approximation

• Control and Cybernetics

• Creative Mathematics and Informatics

• CUBO Matematica Educacional

• Czechoslovak Mathematical Journal

• Demonstratio Mathematica

• Differential Equations and Dynamical Systems

• Discrete and Continuous Dynamical Systems

• Discrete and Continuous Dynamical Systems, Series B

• Discrete Dynamics in Nature and Society

• Dynamic Systems and Applications

• Dynamical Systems

• Dynamics of Continuous, Discrete and Impulsive Systems

• Dynamics of Continuous, Discrete and Impulsive Systems, Series B

• Electronic Journal of Differential Equations

• Electronic Journal of Qualitative Theory of Differential Equations

• Electronic Transactions on Numerical Analysis

• ESAIM: Control, Optimisation and Calculus of Variations

• Funckcialaj Ekvacioj

• Functional Differential Equations

• Georgian Matematical Journal

• Glasgow Matematical Journal

• Glasnik Matematicki

• Herald Journal of Education and General Studies

• IEEE Transactions of Automatic Control

• IEEE Transactions on Neural Networks

• IEEE Transactions of Systems, Man and Cybernetics - Part B

• IMA Journal of Applied Mathematics

• Indian Journal of Pure and Applied Mathematics

• Integral Transforms and Special Functions

• Integers

• International Journal of Applied Mathematical Sciences

• International Journal of Bifurcation and Chaos

• International Journal of Computational Methods

• International Journal of Computer Mathematics

• International Journal of Control

• International Journal of Differential Equations

• International Journal of Evolution Equations

• International Journal of Mathematics

• International Journal of Mathematics and Mathematical Sciences

• International Journal of Numerical Methods for Heat and Fluid Flow

• International Journal of Physical Sciences

• International Mathematics Research Notices

• Inverse Problems

• Iranian Journal of Science and Technology

• Journal of Advanced Mathematical Studies

• Journal of Analysis

• Journal of Applied Mathematics

• Journal of Applied Mathematics and Computing

• Journal of Approximation Theory

• Journal of Computational and Applied Mathematics

• Journal of Difference Equations and Applications

• Journal of Geometry

• Journal of Inequalities in Pure and Applied Mathematics

• Journal of Integral Equations and Applications

• Journal of Languages and Culture

• Journal of Mathematical Analysis and Applications

• Journal of Mathematical Sciences

• Journal of Mathematics

• Journal of Nonlinear Mathematical Physics

• Journal of Optimization Theory and Applications

• Journal of Physics A: Mathematical and Theoretical

• Journal of the Franklin Institute

• Journal of the Korean Mathematical Society

• Journal of the London Mathematical Society

• Journal of Mathematical Inequalities

• Journal of Network and Systems Management

• Journal of Theoretical Probability

• Kragujevac Journal of Mathematics

• Linear Algebra and its Applications

• Mathematical and Computer Modelling

• Mathematical Communications

• Mathematical Inequalities & Applications

• Mathematical Methods in the Applied Sciences

• Mathematical Problems in Engineering

• Mathematica Scandinavika

• Matematica Slovaca

• Mathematical Methods in the Applied Sciences

• Mathematical Problems in Egnineering

• Matematicki Vesnik

• Mathematics and Mechanics of Solids

• Mathematics of Control, Signals, and Systems

• Mathematische Nachrichten

• Mediterranean Journal of Mathematics

• Missouri Journal of Mathematical Sciences

• Nonlinear Analysis

• Nonlinear Analysis: Real World Applications

• Nonlinear Dynamics

• Nonlinear Oscillations

• Nonlinear Theory and its Applications, IEICE

• Periodica Mathematica Hungarica

• Proceedings of the American Mathematical Society

• Proceedings of the Estonian Academy of Sciences

• Proceedings of the London Mathematical Society

• Proceedings of the Royal Society of Edinburgh

• Proceedings Mathematical Sciences

• Publicationes Mathematicae Debrecen

• Reports on Mathematical Physics

• Resultate der Mathematik

• Revista Matematica Complutense

• Rocky Mountain Journal of Mathematics

• Science China Mathematics

• SIAM Journal on Control and Optimization

• Soochow Journal of Mathematics

• Taiwanese Journal of Mathematics

• Tamkang Journal of Mathematics

• Tamsui Oxford Journal of Information and Mathematical Sciences

• The Journal of the Indian Mathematical Society

• Transactions of the American Mathematical Society

• Turkish Journal of Mathematics

• Wave Motion

• ZAA

• ZAMM

Reviewer for the following Book Publishers

• Brooks/Cole

• CRC Press

• de Gruyter

• Harcourt Academic Press

• Houghton Mifflin

• John Wiley & Sons

• Springer

• Taylor and Francis

Reviewer for the following Agencies:

• Grant Agency of the Academy of Sciences of the Czech Republic

• Engineering and Physical Science Research Council (Great Britain)

• Mathematical Reviews

• National Science Foundation (USA)

• National Sciences and Engineering Research Council of Canada

• University of Missouri Research Board

• Kentucky Science and Engineering Foundation

Reviewer for numerous conference proceedings