Henrik Brosenne Matthias Homeister Stephan Waack Graph-Driven Free Parity BDDs: Algorithms and Lower Bounds. 212-223 2001 conf/mfcs/2001 MFCS http://link.springer.de/link/service/series/0558/bibs/2136/21360212.htm db/conf/mfcs/mfcs2001.html#BrosenneHW01