Department of Mathematics
Faculty of Art and Science
University of Gaziosmanpasa
Taşlıçiftlik Kampüsü
60256 Tokat / Turkey
E-mail: ncagman@gop.edu.tr /
ncagman@yahoo.com
Phone: 0 356 252 16 16 Extension: 3160
Fax: 0 356 252 15 85