@book{Urban:2002,
author
=
"S.Urban",
title
=
"PRACE NAUKOWE UNIWERSYTETU EKONOMICZNEGO WE WROCŁAWIU",
publisher
=
"Wydaw. Akademii Ekonomicznej im. Oskara Langego",
address
=
"Wrocław",
year
=
"2002",
volume
=
"T. 1-2(nr 941) ",
number
=
"nr 941",
}