Guido Tack Leif Kornstaedt Gert Smolka Generic Pickling and Minimization. 79-103 2006 148 Electr. Notes Theor. Comput. Sci. 2 http://dx.doi.org/10.1016/j.entcs.2005.11.041 db/journals/entcs/entcs148.html#TackKS06