@proceedings{DasPigTru_j2009_EPTCS, editor = {J{\"u}rgen~Dassow and Giovanni~Pighizzini and Bianca~Truthe}, title = {{Eleventh International Workshop on Descriptional Complexity of Formal Systems. Magdeburg, Germany, July 6--9, 2009. Proceedings}}, year = 2009, series = {EPTCS}, volume = 3, url = {http://eptcs.org/content.cgi?DCFS2009} }