1. Baldaccini NE, Benvenuti S, Fiaschi V, Ioalé P, Papi F (1982) Pigeon orientation: Experiments on the role of olfactory stimuli perceived during the outward journey. This volume, pp 160–169
2. Batschelet E (1972) Recent statistical methods for orientation data. In: Galler SR et al (eds) Animal orientation and navigation. NASA Spec Publ 262. Gov Print Off, Washington DC, pp 61–91
3. Batschelet E (1978) Second-order statistical analysis of directions. In: Schmidt-Koenig K, Keeton WT (eds) Animal migration, navigation, and homing. Springer, Berlin Heidelberg New York, pp 3–24
4. Benvenuti S, Baldaccini NE, Ioalé P (1982) Pigeon homing: Effect of altered magnetic field during displacement on initial orientation. This volume, pp 140–148
5. Foà A, Wallraff HG, Ioalé P, Benvenuti S (1982) Comparative investigations of pigeon homing in Germany and Italy. This volume, pp 232–238