Stephen A. Fenner, Jack H. Lutz, Elvira Mayordomo. Weakly Useful Sequences. In Zoltán Fülöp, Ferenc Gécseg, editors, Automata, Languages and Programming, 22nd International Colloquium, ICALP95, Szeged, Hungary, July 10-14, 1995, Proceedings. Volume 944 of Lecture Notes in Computer Science, pages 393-404, Springer, 1995.
Abstract is missing.