@InProceedings{l95-p323-331, AUTHOR = {Williams~I. Gasarch and Katia~S. Guimar\~aes}, TITLE = {Unbounded Search and Recursive Graph Problems}, YEAR = 1995, BOOKTITLE = {Proc.~of the 2nd Latin American Symposium on Theoretical Informatics (LATIN'95)}, ADDRESS = {Valparaiso, Chile}, PAGES = {323--331}, KEYWORDS = {}}