Sabine Moebs Stephan Weibelzahl Towards a Good Mix in Blended Learning for Small and Medium-Sized Enterprises - Outline of a Delphi Study. 2006 EC-TEL Workshops http://ceur-ws.org/Vol-213/paper4.pdf conf/ectel/2006w db/conf/ectel/ectel2006w.html#MoebsW06