collaborations

(1). Group of Zagreb. Rudger Bošković Institute, Croatia.

(Prof.  Nenad Trinajstić (head), Prof. Ante Graovac,

Dr. Sonja Nikolić, Dr. Dejan Plavšić, Dr. Drazen Vikić-Topić).

(2)  University of Kragujevac (Prof. Ivan Gutman)

(3). Group of Novosibirsk. Institute of Mathematics of Russian Academy, Russia.

(Dr. Andrej Dobrynin, Dr. Elena Konstantinova).

(4). Chemical Research Center, Hungarian Academy of Sciences, Budapest, Hungary.

            (Dr. Istvan Lukovits)

(5). Department of Drug Design. Centro de Bioactivos Químicos. Villa Clara, Cuba

            (Dr. Ernesto Estrada)

(6). University of Calabria, Italy (Prof. Lionello Pogliani)

(7). Drake University, Des Moines, U. S. A. (Prof. Milan Randić)

(8). National Institute of Chemistry, Ljubljana, Slovenia (Dr. Dusanka Janezic).

(9). University of Bayreuth, Germany (Prof. A. Kerber)

(10). Universty of Ilmenau Germany (Prof. P. John)

(11) University of Minnesota, Natural Resources Research Institute, Duluth

(Prof. Subhash C. Basak)

(12) Texas A&M University, Department of Marine Sciences, Galveston, Texas, USA

            (Prof.  D. J. Klein and D. Bonchev)

(13)  University of Girona, Institute of Computational Chemistry (Prof. Ramon Carbó-Dorca)

(14)  Resource Use Institute, Pitlochry, Perthshire, Scotland, UK (Prof. E.C. Kirby)

(15)  Ochanomizu University, Bunkyo-ku, Tokyo, Japan (Prof Haruo Hosoya)

(16)  Virginia Commonwealth University, Richmond, Virginia, USA (Prof. L. B. Kier)

(17)  Eastern Nazarene College, Quincy, Massachusetts, USA (Prof. L. H. Hall)

(18)  University of Georgia, Athens, Georgia, USA (Prof. R. B. King)

(19)  Loránd Eötvös University, Budapest, Hungary (Prof. Gábor Náray-Szabó)

(20)    Institut za hemija, PMF, Univerzitet “Sv. Kiril i Metodij”, Skopje, Macedonia,

(Prof. Gligor Jovanovski, and Ljupčo Pejov)

(21)    University of Ljubljana, IMFM, Ljubljana, Slovenia (Prof. Tomaž Pisanski)

(22)    Mathematics Department, Pace University, New York, U.S.A (Prof.. Louis V. Quintas)

(23)    Technion-Israel Institute of Technology Haifa, Israel. (Prof. V. R. Rosenfeld)

(24)    Institute of Chemistry, Academia Sinica, Taipei, Taiwan (Prof. Zdenek Slanina)

(25)    University of Exeter, UK (Prof. Patrick Fowler)

(26)    University of Utrecht, Holland (Prof. Leo Henneskens)

(27)    University of Modena, Italy (Prof. Paolo Lazzeretti)

(28)    Tohoku University, Sendai, Japan (Prof. Yoshi Kawazoe)

(29)    University of Indore, India (Prof. Padmakar Khadikar)

(20)    University of Tsukuba, Japan (Prof. Shin-ichi Nakayama)

(21)    Institute “Pasteur” Lille, France (Dr. Dragos Horvath)

(22)    Budapest University of Technology and Economics (Prof. István László)

(23)    Katolik University Leuven, Belgium (Prof. Arnout Ceulemans)

(24)    Ural State Technical University, Ekaterinburg, Russia (Prof. A. L. Ivanovskii)

(25)    IMRAM –Institute for Advanced Materials, Tohoku Univ., Sendai, Japan (Prof. F. Pichierri).