1. Mutually Orthogonal Latin Squares;Abel,2006
2. The intersection problem for small G-designs;Billington;Australas. J. Combin.,1995
3. The triangle intersection problem for K4−e designs;Billington;Util. Math.,2007
4. Optimal packings of K4’s into a Kn;Brouwer;J. Combin. Theory A,1979
5. Group divisible designs with block size 4;Brouwer;Discrete Math.,1977