Sharon Barner Daniel Geist Anna Gringauze Symbolic Localization Reduction with Reconstruction Layering and Backtracking. 65-77 2002 conf/cav/2002 CAV http://link.springer.de/link/service/series/0558/bibs/2404/24040065.htm db/conf/cav/cav2002.html#BarnerGG02