* Marteinson, Peter, "On the Problem of the Comic: A Philosophical Study on the Origins of Laughter", Legas Press, Ottawa, 2006. utoronto.ca* Provine, R. R., "Laughter.
Introduction a la psychologie du rire, Paris, 1952* Marteinson, Peter, On the Problem of the Comic: A Philosophical Study on the Origins of Laughter, Legas Press, Ottawa, 2006.