Fabio Somenzi Kavita Ravi Roderick Bloem Analysis of Symbolic SCC Hull Algorithms. 88-105 2002 conf/fmcad/2002 FMCAD http://link.springer.de/link/service/series/0558/bibs/2517/25170088.htm db/conf/fmcad/fmcad2002.html#SomenziRB02