1. On the distance between distinct group Latin squares;Donovan;J. Comb. Des.,1997
2. How far apart can the group multiplication table be?;Drápal;Europ. J. Combinatorics,1992
3. Non-isomorphic 2-groups coincide at most in three quarters of their multiplication tables;Drápal;Europ. J. Combinatorics,2000
4. A. Drápal, On distances of 2-groups and 3-groups, Proceedings of Groups St. Andrews 2001 in Oxford, Cambridge University Press, to appear
5. A. Drápal, Quarter distant 2-groups distribute their difference set uniformly, manuscript