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CHRISTIDIS, L. Chromosomal evolution within the family Estrildidae (Aves) III. The Estrildae (waxbill finches). Genetica. 1987-6, roč. 72, čís. 2, s. 93–100. Dostupné online [cit. 2019-09-12]. ISSN0016-6707. DOI10.1007/BF00123167. (anglicky)
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SYMES, Craig T; WILSON, John W. Primary moult patterns and morphometrics in the Green-winged Pytilia Pytilia melba. Ostrich. 2008-4, roč. 79, čís. 1, s. 87–90. Dostupné online [cit. 2019-09-12]. ISSN0030-6525. DOI10.2989/OSTRICH.2008.79.1.12.367. (anglicky)
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