@book{Korbicz:1993,
author
=
"J.Korbicz",
title
=
"Applied Mathematics and Computer Science, ISSN: 1641-876X",
publisher
=
"University of Zielona Góra Press",
address
=
"Zielona Góra",
year
=
"1993",
volume
=
"Vol. 3(no. 1-4) ",
number
=
"no. 1-4",
}