Július Korbaš
Department of Algebra, Geometry, and Mathematical Education,
Faculty
of Mathematics, Physics, and Informatics,
Comenius University,
Mlynská dolina,
SK-842 48 Bratislava
4,
Slovakia
E-mail: korbas(at)fmph.uniba.sk
Telephone: (00421 2) 60295812
Krzysztof Pawałowski
Faculty of Mathematics and Computer Science,
Mickiewicz University,
Umultowska 87,
PL-61-614 Poznań,
Poland
E-mail: kpa(at)amu.edu.pl
Telephone: (0048 61) 8295490
Masaharu Morimoto
Department of Environmental and Mathematical Sciences,
Faculty of Environmental Science and Technology,
Okayama University,
700-8530 Okayama,
Japan
E-mail: morimoto(at)ems.okayama-u.ac.jp
Telephone: (0081 86) 2518821