1. E. Allender and L. A. Hemachandra. Lower bounds for the low hierarchy. Inproceedings of the 16th ICALP, pages 31?45. Lecture Notes in Computer Science, Volume 372. Springer-Verlag, Berlin, 1989.
2. A. Amir, R. Beigel, and W. I. Gasarch. Some connections between bounded query classes and non-uniform complexity. InProceedings of the 5th Annual Conference on Structure in Complexity Theory, pages 232?243. IEEE Computer Society Press, New York, July 1990.
3. A. Amir and W. I. Gasarch. Polynomial terse sets.Inform. and Comput. 77:37?56, April 1988.
4. J. L. Balcázar, R. V. Book, and U. Schöning. Sparse sets, lowness and highness.SIAM J. Comput.,15(3):739?747, August 1986.
5. R. Beigel. Bounded queries to SAT and the Boolean hierarchy.Theoret. Comput. Sci.,84(2): 199?223, July 1991.