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Non isomorphic Steiner quadruple systems. (to appear).
MR 0321750
[3] C. C. LINDNER, Tina H. STRALEY:
Construction of quasigroups containing a specified number of subquasigroups of a given order. Algebra Universails 1 (1971), 238-247.
MR 0294548
[4] C. C. LINDNER, Tina H. STRALEY: A note on nonisomorphic reverse Steiner quasigroups. submitted to Publicationes Mathematicae.
[5] C. C. LINDNER:
On the construction of nonisomorphic Steiner quadruple systems. Colloq. Math. (to appear) .
MR 0416944
[6] N. S. MENDELSOHN H. S. Y. HUNG:
On the Steiner systems $S(3, 4, 14)$ and $S(4, 5, 15)$. Utilitas Mathematica 1 (1972), 5-95.
MR 0302474
[7] Tina H. STRALEY:
Construction of Steiner quasigroups containing a specified number of subquasigroups of a given order. J. Comb. Theory, Ser. A 13 (1972), 374-382.
MR 0304537