@article{Olds, author = {Olds, J. M. E.}, title = {The mechanisms of voluntary behavior}, series = {R. G. Heath (Ed.), The role of pleasure in behavior, New York (Harper \& Row) 1964, pp. 23-55.}, journal = {R. G. Heath (Ed.), The role of pleasure in behavior, New York (Harper \& Row) 1964, pp. 23-55.}, language = {en} }