[Adamska K., Filar M. 2005. Directional preferences of the Chiffchaff (Phylloscopus collybita) and the Robin (Erithacus rubecula) on autumn migration in the Beskid Niski Mountains (S Poland). Ring 27, 2: 159-176.]Search in Google Scholar
[Busse P. 1995. New technique of a field study of directional preferences of night passerine migrants. Ring 17, 1-2: 97-116.]Search in Google Scholar
[Busse P. 2000. Bird Station Manual. Gdańsk.]Search in Google Scholar
[Busse P., Trocińska A. 1999. Evaluation of orientation experiment data using circular statistics — doubts and pitfalls in assumptions. Ring 21, 2: 107-130.]Search in Google Scholar
[Herman E. 1964. Report of the work of spring observation at Przełęcz Dukielska. Not. Orn. 2-4.]Search in Google Scholar
