@proceedings{DaJueWo_j2004, editor = {J{\"u}rgen~Dassow and Helmut~J{\"u}rgensen and Detlef~Wotschke}, title = {{Selected Papers of the `Fourth International Workshop on Descriptional Complexity of Formal Systems, DCFS '02 (London, Canada, August 21--24, 2002)}}, series = jalc, volume = {9/2--3}, year = 2004, url = {http://jalc.de/search/j09_i.html} }