Martin Baca Edy Tri Baskoro Mirka Miller Antimagic Valuations for the Special Class of Plane Graphs. 58-64 http://springerlink.metapress.com/openurl.asp?genre=article&issn=0302-9743&volume=3330&spage=58 2003 conf/jcdcg/2003 IJCCGGT db/conf/jcdcg/ijccggt2003.html#BacaBM03