1. Difference families;Abel,2007
2. Modified group divisible designs with block size 5 and λ=1;Abel;Discrete Math.,2002
3. Modified group divisible designs with block size 5 and even index;Abel;Discrete Math.,2008
4. Modified group divisible designs;Assaf;Ars Comb.,1990
5. On a combinatorial problem of antennas in radio astronomy;Bermond,1976