Tadas MeskauskasPh.D., assistant professor at the Department of Mathematics and Informatics, Vilnius University, LithuaniaAddress: Naugarduko 24, LT-2006, Vilnius, LithuaniaPhone: +370 2 336035 Fax: +370 2 251585 E-mail: www: http://www.itpa.lt/~kvantas/tadas/ |