Pham Ngoc Anh
Renyi Institute of the Hungarian Academy of Sciences, P. O. Box 127, 1364 Budapest, Hungary
anh@renyi.hu

Karl Auinger
Institut fur Mathematik, Universitat Wien, Strudlhofgasse 4, A-1090 Wien, Austria
Karl.Auinger@univie.ac.at

Bernd Billhardt
Universitat Gesamthochschule Kassel, FB 17 Mathematik/Informatik, Hollandische Str. 36, D-34109 Kassel, Germany
billard@hrz.uni-kassel.de

Stojan Bogdanovic
University of Nis, Faculty of Economics, Trg VJ 11, P. O. Box 121, 18000 Nis, Yugoslavia
sbogdan@archimed.filfak.ni.ac.yu

Winfried Bruns
FB 6 Mathematik/Informatik, Universitat Osnabruck, D-49069 Osnabruck, Germany
Winfried.Bruns@mathematik.uni-osnabrueck.de

Miroslav Ciric
University of Nis, Faculty of Sciences and Mathematics, Cirila i Metodija 2, P. O. Box 91, 18000 Nis, Yugoslavia
ciricm@bankerinter.net

Sinisa Crvenkovic
Institute of Mathematics, University of Novi Sad, Trg Dositeja Obradovica 4, 21000 Novi Sad, Yugoslavia
sima@eunet.yu

Bela Csakany
University of Szeged, Bolyai Institute, 6720 Szeged, Aradi vertanuk tere 1, Hungary
csakany@math.u-szeged.hu

Gabor Czedli
University of Szeged, Bolyai Institute, 6720 Szeged, Aradi vertanuk tere 1, Hungary
czedli@math.u-szeged.hu

Klaus Denecke
Universitat Potsdam, Institut fur Mathematik, PF 60 15 35, 14415 Potsdam, Germany
kdenecke@rz.uni-potsdam.de

Igor Dolinka
Institute of Mathematics, University of Novi Sad, Trg Dositeja Obradovica 4, 21000 Novi Sad, Yugoslavia
dockie@unsim.ns.ac.yu

Erzsebet Dombi
University of Szeged, Bolyai Institute, 6720 Szeged, Aradi vertanuk tere 1, Hungary
dombie@math.u-szeged.hu

Pal Domosi
Kossuth Lajos University, Mathematical Institute, P. O. Box 12, 4010 Debrecen, Hungary
domosi@math.klte.hu

Miklos Dorman
University of Szeged, Bolyai Institute, 6720 Szeged, Aradi vertanuk tere 1, Hungary
dorman@math.u-szeged.hu

Wit Forys
Instytut Informatyki, Uniwersytet Jagiellonski, Nawojki 11, 30-075 Krakow, Poland
forysw@softlab.ii.uj.edu.pl

Pierre A. Grillet
Department of Mathematics, Tulane University, New Orleans, Louisiana 70118, USA
grillet@math.tulane.edu

Cornelia Gutan
Universite Blaise Pascal, Departement de mathematiques, Complexe scientifiques des Cezeaux, 63177 Aubiere, France
gutan@ucfma.univ-bpclermont.fr

Marin Gutan
Universite Blaise Pascal, Departement de mathematiques, Complexe scientifiques des Cezeaux, 63177 Aubiere, France
gutan@ucfma.univ-bpclermont.fr

Eszter K. Horvath
University of Szeged, Bolyai Institute, 6720 Szeged, Aradi vertanuk tere 1, Hungary
horeszt@math.u-szeged.hu

Tatiana Jajcayova
Comenius University, Faculty of Mathematics and Physics, Institute of Informatics, Mlynska dolina, 84248 Bratislava, Slovakia
jajcayova@fmph.uniba.sk

Kamilla Katai-Urban
University of Szeged, Bolyai Institute, 6720 Szeged, Aradi vertanuk tere 1, Hungary
katai@math.u-szeged.hu

Ondrej Klima
Department of Mathematics, Masaryk University, 66295 Brno, Czech Republic
klima@math.muni.cz

Lajos Klukovits
University of Szeged, Bolyai Institute, 6720 Szeged, Aradi vertanuk tere 1, Hungary
klukovit@math.u-szeged.hu

Janusz Konieczny
Department of Mathematics, Mary Washington College, Fredericksburg, VA 22401, USA
jkoniecz@mwc.edu

Jelena Kovacevic
University of Nis, Faculty of Sciences and Mathematics, Cirila i Metodija 2, 18000 Nis, Yugoslavia
jkovac@bankerinter.net

Dragica Krgovic
Matematicki institut SANU, Kneza Mihaila 35, 11001 Beograd, p.p.367, Yugoslavia
blagoje@turing.mi.sanu.ac.yu

Predrag V. Krtolica
University of Nis, Faculty of Economics, Trg VJ 11, P. O. Box 121, 18000 Nis, Yugoslavia
krca@archimed.filfak.ni.ac.yu

Michal Kunc
Department of Mathematics, Masaryk University, 66295 Brno, Czech Republic
kunc@math.muni.cz

Martin Kuril
J. E. Purkyne University, Ceske mladeze 8, 400 96  Usti nad Labem, Czech Republic
kurilm@pf.ujep.cz

Lucinda Maria Lima
Departamento de Matematica Pura, Faculdade de Ciencias, Universidade do Porto, Praca Gomes Teixeira, 4099-002 Porto, Portugal
lclima@fc.up.pt

Laszlo Marki
Renyi Institute of the Hungarian Academy of Sciences, P. O. Box 127, 1364 Budapest, Hungary

Donald B. McAlister
Department of Mathematical Sciences, Northern Illinois University, DeKalb, IL 60115, USA
don@math.niu.edu

Laszlo Megyesi
University of Szeged, Bolyai Institute, 6720 Szeged, Aradi vertanuk tere 1, Hungary
megyesi@math.u-szeged.hu

Melanija Mitrovic
University of Nis, Faculty of Mechanical Engineering, Beogradska 14, 18 000 Nis, Yugoslavia
meli@junis.ni.ac.yu

Attila Nagy
Budapest University of Technology and Economics, Mathematical Institute, Department of Algebra, 1111 Budapest,
Muegyetem rkp. 3. H. epulet 5/5, Hungary
nagyat@math.bme.hu

Chrystopher L. Nehaniv
Faculty of Engineering and Information Sciences, University of Hertfordshire, Hatfield Herts AL10 9AB, United Kingdom
C.L.Nehaniv@herts.ac.uk

Peeter Normak
Tallinna Pedagoogikaulikool, Narva Mnt. 25, 10120 Tallinn, Estonia
pnormak@tpu.ee

Boris V. Novikov
Saltovskoye shosse 258, apt. 20, 61178 Kharkov, Ukraine
boris.v.novikov@univer.kharkov.ua

Ana Maria Oliveira
Departamento de Matematica Pura, Faculdade de Ciencias, Universidade do Porto, Praca Gomes Teixeira, 4099-002 Porto, Portugal
amoliv@fc.up.pt

Tatjana Petkovic
Department of Mathematics, University of Turku, FIN-20014 Turku, Finland
tatpet@utu.fi

Goncalo Pinto
Unidade de Investigacao em Matematica, Instituto Piaget, Almada, Portugal
gapinto@ipiaget.pt

Libor Polak
Department of Mathematics, Masaryk University, 66295 Brno, Czech Republic
polak@math.muni.cz

Gyorgy Pollak
University of Szeged, Bolyai Institute, 6720 Szeged, Aradi vertanuk tere 1, Hungary
pollak@math.u-szeged.hu

Zarko Popovic
University of Nis, Faculty of Economics, Trg VJ 11, P. O. Box 121, 18000 Nis, Yugoslavia
zpopovic@orion.eknfak.ni.ac.yu

Peeter Puusemp
Department of Mathematics, Tallinn Technical University, Ehitajate tee 5, Tallinn 19086, Estonia
puusemp@edu.ttu.ee

John Rhodes
Department of Mathematics, University of California, Berkeley, CA 94720, USA
rhodes@math.berkeley.edu

Boris M. Schein
Department of Mathematical Sciences SCEN-31, University of Arkansas, Fayetteville, AR 72701, USA
bschein@comp.uark.edu

Arseny M. Shur
Dept. of Algebra and Discr. Math., Ural State University, Lenina 51, 620083 Ekaterinburg, Russia
Arseny.Shur@usu.ru

Aleksandar Stamenkovic
University of Nis, Faculty of Economics, Trg VJ 11, P. O. Box 121, 18000 Nis, Yugoslavia
ciricm@bankerinter.net

Benjamin Steinberg
Department of Pure Mathematics, University of Porto, 4099-002 Porto, Portugal
bsteinbg@agc0.fc.up.pt

Laszlo Szabo
University of Szeged, Bolyai Institute, 6720 Szeged, Aradi vertanuk tere 1, Hungary
szabol@math.u-szeged.hu

Maria B. Szendrei
University of Szeged, Bolyai Institute, 6720 Szeged, Aradi vertanuk tere 1, Hungary
m.szendrei@math.u-szeged.hu

Istvan Szittyai
University of Szeged, Bolyai Institute, 6720 Szeged, Aradi vertanuk tere 1, Hungary
szittyai@math.u-szeged.hu

Ngo Viet Trung
Hanoi Institute of Mathematics, P. O. Box 631, Bo Ho, 10000 Hanoi, Vietnam
nvtrung@hn.vnn.vn

Vitaly Usenko
vul. gen. Batjuka 35, apt. 40, 84216 Slovyans'k, Donetsk reg., Ukraine
velichko_v@mail.ru

Boris M. Vernikov
Dept. of Algebra and Discr. Math., Ural State University, Lenina 51, 620083 Ekaterinburg, Russia
boris.vernikov@usu.ru

Mikhail V. Volkov
Dept. of Algebra and Discr. Math., Ural State University, Lenina 51, 620083 Ekaterinburg, Russia
Mikhail.Volkov@usu.ru

Akihiro Yamamura
4-2-1, Nukui-Kitamachi, Koganei, Tokyo 184-8795, Japan
aki@crl.go.jp

Laszlo Zadori
University of Szeged, Bolyai Institute, 6720 Szeged, Aradi vertanuk tere 1, Hungary
zadori@math.u-szeged.hu