1. Steiner triple systems with given subspaces; another proof of the Doyen-Wilson theorem;Stern;Boll. Un. Mat. Ital.,1980
2. [3] Mendelsohn E. and Rosa A. , “One-factorizations of the complete graph–a survey”, J. Graph Theory, to appear.
3. A tournament problem
4. Parallelisms of Complete Designs
5. Tripling quadruple systems;Hartman;Ars Combinatoria,1980