Nonabelian groups with ( 96 , 20 , 4 ) difference sets. AbuGhneim, Omar A.; Smith, Ken W. — 2007 The Electronic Journal of Combinatorics [electronic only]
Factoring ( 16 , 6 , 2 ) Hadamard difference sets. Bhattacharya, Chirashree; Smith, Ken W. — 2008 The Electronic Journal of Combinatorics [electronic only]
A proof of the two-path conjecture. Fleischner, Herbert; Molina, Robert R.; Smith, Ken W.; West, Douglas B. — 2002 The Electronic Journal of Combinatorics [electronic only]