• [Wiki] http://en.wikipedia.org/wiki/Phylloscopus_sibilatrix.
• [EOL] https://eol.org/pages/45510048.
• [AnAge] http://genomics.senescence.info/species/entry.php?species=Phylloscopus_sibilatrix.
• [birdsworld] https://birdsoftheworld.org/bow/species/woowar/cur/introduction.
• [Kooy2010] Kooijman, S. (2010). Dynamic Energy Budget theory for metabolic organisation. Cambridge Univ. Press, Cambridge.
• [PrinPres1991] Prinzinger, R., A.Preßmar, and Schleucher, E. (1991). Body temperature in birds. Comp. Biochem. Physiol., 99A(4):499--506. doi:10.1016/0300-9629(91)90122-S.
• [Tiai1978] Tiainen, J. (1978). Nestling growth in three Phylloscopus warblers in Finland. Ornis Fennica, 55:1--15.