@article{2008:ortmann:lernen_dur,
title = {Lernen durch Handeln},
year = {2008},
note = {},
journal = {Blätter der Wohlfahrtspflege (BdW)},
pages = {153--154},
author = {Ortmann, Karlheinz and Gurris, Norbert F. and Zimmermann, Ralf-Bruno},
volume = {155},
number = {4}
}