1. Dember, W.N., & Fowler, H. (1958). Spontaneous alternation behavior.Psychological Bulletin, 55, 412–428.
2. Douglas, R.J. (1966). Cues for spontaneous alternation.Journal of Comparative and Physiological Psychology, 62, 171–183.
3. Douglas, R.J. (1975). The development of hippocampal function: Implications for theory and for therapy. In R.L. Isaacson & K.H. Pribram (Eds.),The hippocampus, vol 2. New York: Plenum Press.
4. Eibl-Eibesfeldt, I. (1953). Zur ethologie des hamstersCricetus cricetus L.Zeitschrift für Tierpsychologie, 10, 204–254.
5. Fowler, H. (1965).Curiosity and exploratory behavior. New York: Macmillan.