Anniversary Award for Teaching and Research Achievements, Faculty of Electronic Engineering, University of Niš (1980 and 1985)

University Award for Advancement of Science, University of Niš (1985)

Niš City Liberation Anniversary Award for Distinguished Contribution to the Science Development, Community of Niš (1988)

Golden Award for Research and Teaching Achievements, University of Niš (1995)

Anniversary Award for Distinguish Contribution in Research and Teaching Activities, Faculty of Electronic Engineering, University of Niš (1995)

City of Belgrade Award for the Year 2014 in the Field: Natural and Technical Sciences, Assembly of the City of Belgrade (2015)

Who's Who in the World (8th Edition, 1987 - 1988, and 9th Edition, 1989 - 1990), Marquis Who's Who, Macmillan Directory Division, Wilmette, IL USA.

Men of Achievement (13th Edition, 1989), International Biographical Centre, Cambridge, England.

Who's Who in Serbia (1st Edition, 1991; 2nd Edition 1995), Biblofon, Belgrade (Serbian).

Purdue University, USA (1985, 1989)

University of Pau, France (1987, 1990, 1992, 1994)

Universitity of Basilicata, Potenza, Italy (1991, 1995, 1997, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014)

Editor-in-Chief Publ. Inst. Math. (Beograd) (N.S.) Institut Mathématique. Publications . Nouvelle Série. Inst. Math., Belgrade, ISSN 0350-1302;

Editor-in-Chief Bull. Cl. Sci. Math. Nat. Sci. Math. Bulletin, Classe des Sciences Mathématiques et Naturelles, Sciences mathématiques, Serbian Academy of Sciences and Arts, Belgrade, ISSN 0561-7332;

Associate Editor of Appl. Math. Comput. Applied Mathematics and Computation. Elsevier, Inc., New York, USA, ISSN 0096-3003;

Associate Editor of Optim. Letters. Optimization Letters. Springer, ISSN 1862-4472 (print version), ISSN 1862-4480 (electronic version);

Editor-in-Chief J. Inequal. Appl. Journal of Inequalities and Applications. Springer, ISSN 1029-242X (electronic version; open access);

Member of Editorial Board for FILOMAT (Formerly: Zb. Rad.). Faculty of Sciences and Mathematics, University of Niš, Niš, ISSN 0354-5180;

Member of Editorial Board for Appl. Anal. Discrete Math. Applicable Analysis and Discrete Mathematics (Formerly: Univ. Beograd. Publ. Elektrotehn. Fak. Ser. Mat. ). University of Belgrade and Academic Mind, Belgrade, ISSN 1452-8630;

Member of Editorial Board for Facta Univ. Ser. Math. Inform. Facta Universitatis. Series: Mathematics and Informatics. University of Niš, Niš, ISSN 0352-9665 [Founder and Editor-in-Chief in the period 1986-2008];

Editor of JIPAM. J. Inequal. Pure Appl. Math. JIPAM. Journa of Inequalities in Pure and Applied Mathematics. Vic. Univ. Technol., Melbourne, Australia, ISSN 1443-5756;

Member of Advisory Board for Banach J. Math. Anal. Banach Journal of Mathematical Analysis. An International Open Access Electronic & ISI Journal, Mashhad, Iran, ISSN 1735-8787 [2007 - 2010];

Member of Advisory Board for Ann. Funct. Anal. Annals of Functional Analysis. An International Open Access Electronic Journal, Mashhad, Iran, ISSN 2008-8752;

Member of Editorial Board for East J. Approx.East Journal on Approximations. Darba, Sofia, Bulgaria, ISSN 1310-6236;

Member of Editorial Board for Math. Balkanica.(N.S.). Mathematica Balkanica. New Series. Bulgar. Acad. Sci., Sofia, Bulgaria, ISSN 0205-3217;

Member of Editorial Board for Armenian J. Math.Armenian Journal of Mathematics. Electronic Open Access Publication of the National Academy of Sciences of Armenia, Yerevan, Armenia, ISSN 1829-1163;

Member of Editorial Board for J. Numer. Anal. Approx. Theory. Journal of Numerical Analysis and Approximation Theory. Ed. Acad. Romane, Bucharest, Romania, ISSN 2457-6794;

Member of Editorial Board for Studia Univ. Babeş-Bolyai Math. Studia Universitatis Babeş-Bolyai Mathematica. Univ. Babeş-Bolyai, Cluj-Napoca, Romania, ISSN 0252-1938;

Member of Editorial Board for Novi Sad J. Math. Novi Sad Journal of Mathematics.(Formerly: Univ. u Novom Sadu Zb. Rad. Prirod.-Mat. Fak. Ser. Mat. ). Univ. Novi Sad, Novi Sad, ISSN 0352-0900;

Member of Editorial Board for Yugosl. J. Oper. Res. Yugoslav Journal of Operations Research. Univ. Belgrade, Belgrade, ISSN 0354-0243;

Member of Editorial Board for Kragujevac J. Math. Kragujevac Journal of Mathematics.(Formerly: Zb. Rad. (Kragujevac)) . Institute of Mathematics, Faculty of Science, University of Kragujevac, Kragujevac, ISSN 1450-9628;

Referee for various important journals (e.g. SIAM J. Math. Anal., SIAM J. Numer. Anal., Math. Comp., J. Comput. Appl. Math., J. Approx. Theory, J. Math. Anal. Appl., East J. Approx., Calcolo), and reviewer for the Mathematical Reviews and Zentralblatt für Mathematik (AMS Subject Classification: 26, 33, 41, 42, 65).

Has been invited to a number of International Conferences, e.g., Sofia, Bulgaria (1988, 1994, 2011, 2014); Banach Center, Warsaw, Poland (1992); Purdue University, USA (1993); Oberwolfach, Germany (1995, 1998); Cluj-Napoca, Romania (1996, 2002, 2006, 2010, 2014); Vico Equense, Italy (1997, 1999); Acquafredda di Maratea, Italy (2000, 2004, 2009); Røros, Norway (2003); Copenhagen, Denmark (2003); University of Stellenbosch, South Africa (2005); Borovetz, Bulgaria (2006); CIRM Marseille, France (2007); Zürich, Switzerland (2007); Sao Paolo, Brazil (2008); Budapest, Hungary (2008); S. Margherita di Pula, Cagliari, Italy (2011); Port Elizabeth, South Africa (2011); Kos, Greece (2012); Ubeda, Jaen, Spain (2013); Dongguk University, Gyeongju, South Korea (2014).

Has also given a number of colloquium and seminar talks in several centers in ex-Yugoslavia and abroad.

Orthogonal Polynomials and Systems

Interpolation, Quadrature Processes and Integral Equations

Approximations by Polynomials and Splines

Polynomials (Extremal Problems, Inequalities, Zeros)

Inequalities