1. Animal Migration;Aidley,1981
2. Information theory as an extension of the maximum likelihood principle;Akaike,1973
3. Instability of development and fractal architecture in dryland plants as an index of grazing pressure;Alados;J. Arid Environ.,1998
4. Bird Migration;Alerstam,1990
5. The course and timing of bird migration;Alerstam,1981