1. Calhoun J B, (1963) In: Physiological Mammalogy. Ed. Mayer W, Van Gelder R. Academic Press, New York; 1, 1–187
2. Calhoun J B, (1967) In: Comparative Psychopathology. Ed. Zubin J. Grune & Stratton, New York; pp 1–51
3. Calhoun J B, (1971) In: Behavior and Environment — The Use of Space by Animals and Men. Ed. Esser A H. Plenum, New York; pp 329–387
4. Marsden H M, (1972) In: Environment and the Social Sciences: Perspectives and Applications. Ed. Wohwill J F, Carson D H. American Psychological Association, Washington, DC; pp 5–14