Jianer Chen Donald K. Friesen Weijia Jia Iyad A. Kanj Using Nondeterminism to Design Efficient Deterministic Algorithms. 83-97 2004 40 Algorithmica 2 http://dx.doi.org/10.1007/s00453-004-1096-z db/journals/algorithmica/algorithmica40.html#ChenFJK04