assoc. prof. dr. Tatjana Vilutiene, Vilnius Gediminas Technical University, Sauletekio al. 11, LT-10223 Vilnius-40, Lithuania, Tel: (+370) 61290700, Fax: (+370) 52700112, E-mail: crypt:PGEgaHJlZj0ibWFpbHRvOnRhdGphbmEudmlsdXRpZW5lQHN0LnZndHUubHQiPnRhdGphbmEudmlsdXRpZW5lQHZndHUubHQgPC9hPg==:xx