@article{Walaszek-Babiszewska:2009,
author
=
"A.Walaszek-Babiszewska and A.Kowal",
title
=
"On fuzzy models in economic data analyses",
journal
=
"Management-Poland",
volume
=
"Vo. 4",
number
=
"no 1",
pages
=
"101--111",
year
=
"2000",
}