Dominik Schmitz Hans W. Nissen Matthias Jarke Thomas Rose Peter Drews Frank J. Hesseler Michael Reke Requirements Engineering for Control Systems Development in Small and Medium-Sized Enterprises. 229-234 2008 RE http://dx.doi.org/10.1109/RE.2008.27 conf/re/2008 db/conf/re/re2008.html#SchmitzNJRDHR08