Sandeep N. Bhatt Shimon Even David S. Greenberg Rafi Tayar Traversing Directed Eulerian Mazes. 35-46 http://link.springer.de/link/service/series/0558/bibs/1928/19280035.htm 2000 conf/wg/2000 WG db/conf/wg/wg2000.html#BhattEGT00