Youngho Lee The polyhedral structure of certain combinatorial optimization problems with application to a naval defense problem. 1992 Virginia Tech, Blacksburg, VA, USA https://hdl.handle.net/10919/38394 http://scholar.lib.vt.edu/theses/available/etd-06062008-170300/ https://www.base-search.net/Record/e0491158b46e1f981d87ef08aef6567d38530b7ed3f17d13842cd8e116d87eef base-search.net (ftvirginiatec:oai:vtechworks.lib.vt.edu:10919/38394)