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2. Recent statistical methods for orientation data;Batschelet,1972
3. Pigeon homing: effect of altered magnetic field during displacement on initial orientation;Benvenuti,1982
4. Circadian activity rhythm influenced by near zero magnetic field;Bliss;Nature, Lond.,1976
5. The case for magnetic sensitivity in birds and bees (such as it is);Gould;Am. Sci.,1980