@book{Korbicz:2008,
author
=
"J.Korbicz",
title
=
"International Journal of Applied Mathematics and Computer Science, ISSN: 1641-876X",
publisher
=
"University of Zielona Góra Press",
address
=
"Zielona Góra",
year
=
"2008",
volume
=
"Vol. 18(no 1-4) ",
number
=
"no 1-4",
}