@article{Kowal:2009,
author
=
"A.Kowal and A.Walaszek-Babiszewska",
title
=
"Wybrane zagadnienia pozyskiwania wiedzy",
journal
=
"Wiadomości Górnicze",
volume
=
"R. 50",
number
=
"nr 5",
pages
=
"87--92",
year
=
"1999",
}