1. Adams, W. W., Goldstein L. J.,Introduction to number theory, Prentice-Hall Inc. Englewood Cliffs New Jersey, 1976.
2. Bruck R. H.,Computational aspects of certain combinatorial problems, Proc. Symposia in Appl. Math., A.M.S.6 (1956), 31–43.
3. Cassels J. W. S.,Diophantine equations with special reference to elliptic curves, J. London Math. Soc.,41 (1966), 193–291.
4. Cicchese M.,Sulle cubiche di un piano di Galois, Rend. Mat. Univ. Roma, (5)24 (1965), 291–330.
5. Cicchese M.,Sulle cubiche di un piano lineare S 2,q con q≡1 (mod 3) Rend. Mat. Univ. Roma, (6)4 (1971), 349–383.