An Upper Bound of 62 on the Classical Ramsey Number R(3, 3, 3, 3).

Susan E. Fettes Richard L. Kramer Stanislaw P. Radziszowski An Upper Bound of 62 on the Classical Ramsey Number R(3, 3, 3, 3). 2004 72 Ars Comb. db/journals/arscom/arscom72.html#FettesKR04