@inproceedings{BDFP83,
AUTHOR = {Borodin, A. and Dolev, D. and Fich, F. and Paul, W.J.},
TITLE = {Bounds for Width-Two Branching Programs},
YEAR = {1983},
PAGES = {87--93},
BOOKTITLE = {Proc. 15th ACM-STOC },
EE = {http://portal.acm.org/citation.cfm?id=800061.808736&coll=ACM&dl=ACM&CFID=87041108&CFTOKEN=61555889},
}