[Able K. P. 1995. Orientation and navigation: a perspective on fifty years of research.Condor 97: 592-604.10.2307/1369049]Search in Google Scholar
[Alerstam T. 1993. Bird Migration. Cambridge Univ. Press, Cambridge.]Search in Google Scholar
[Berthold P. 1993. Bird Migration: a general survey. Oxford Univ. Press, Oxford.]Search in Google Scholar
[Boyd R. 1991. On the current status of scientific realism. In: Boyd R., Gasper P., Trout J. D. (Eds). The Philosophy of Science. The MIT Press.]Search in Google Scholar
[Busse P., Kania W. 1980. Field methods in bird migration studies and ways of publishing the results.Acta orn. 17: 25-36.]Search in Google Scholar
[Gauthreaux S. A.Jr. 1996. Bird migration: Methodologies and Major Reseach Trajectories (1945-1995).Condor 98: 442-453.10.2307/1369168]Search in Google Scholar
[Newton I. 2008. The migration ecology of birds. Acad. Press, Oxford.]Search in Google Scholar