RT Journal Article
SR Electronic
A1 Osuch, Wiktor
T1 
JF e-Pedagogium
YR 2011
VO 11
IS 4
SP 62
OP 80
DO 10.5507/epd.2011.050
UL https://e-pedagogium.upol.cz/artkey/epd-201104-0005.php
AB