Solomon, Richard L.; Corbit, John D. (1974). "An opponent-process theory of motivation: I. Temporal dynamics of affect". Psychological Review. 81 (2): 119–145. CiteSeerX10.1.1.468.2548. doi:10.1037/h0036128.
Solomon, Richard L.; Corbit, John D. (1974). "An opponent-process theory of motivation: I. Temporal dynamics of affect". Psychological Review. 81 (2): 119–145. CiteSeerX10.1.1.468.2548. doi:10.1037/h0036128.