@incollection{Keim2003, author = {Karl-Dieter Keim}, title = {Sociological aspects of Trans-border Co-operation}, booktitle = {Proceedings of the Polish-German Symposium on Science Research Education, September 2000, Zielona G{\´o}ra, Poland, Vol. 1}, editor = {J{\´o}zef Korbicz}, isbn = {83-85911-86-3}, year = {2003}, }