@InCollection{Piechowiak:2004,
author
=
"M.Piechowiak",
title
=
"Kaufmann Erich",
pages
=
"554-556",
year
=
"2004",
booktitle
=
"Powszechna encyklopedia filozofii. T. 5: I - K ISBN: 8391880079",
publisher
=
"Polskie Towarzystwo Tomasza z Akwinu",
address
=
"Lublin",
}