1. Allen, T. F. H. (1977): ?Scale in Microscopic Algal Ecology: A Neglected Dimension,? Phycologia 16, 253?257.
2. Andrews, David F., et al. (1972): Robust Estimates of Location: Survey and Advances, Princeton University Press, Princeton.
3. Boyd, R. (1972): ?Determinism Laws and Predictability in Principle,? Philosophy of Science 39, 431?450.
4. Campbell, Donald T. (1958): ?Common Fate, Similarity and Other Indices of the Status of Aggregates of Persons as Social Entities,? Behavioral Science 3, 16?25.
5. Campbell, Donald T. (1966): ?Pattern-Matching as an Essential in Distal Knowing? in Kenneth R. Hammond, ed. The Psychology of Egon Brunswick. Holt, Reinhart and Winston, New York, pp. 81?106.