Synthetic Ethology and the Evolution of Cooperative Communication. - Bruce J. MacLennan; Gordon M. Burghardt (Adapt. Behav., 1993)

To play or not to play? That's a resource abundance question. - Jeremy Auerbach; Andrew R. Kanarek; Gordon M. Burghardt (Adapt. Behav., 2015)

Evolutionary models for the retention of adult-adult social play in primates: The roles of diet and other factors associated with resource acquisition. - Brian C. O'Meara; Kerrie Lewis Graham; Sergio M. Pellis; Gordon M. Burghardt (Adapt. Behav., 2015)

Modeling play: distinguishing between origins and current functions. - Sergio M. Pellis; Gordon M. Burghardt; Elisabetta Palagi; Marc Mangel (Adapt. Behav., 2015)