(en) Elena Konovalova, Elena Gladyr, Ol'ga Kostiunina et Nataliya Zinovieva, « CONGENITAL DEFECTS OF BEEF CATTLE BREEDS AND GENERAL PRINCIPLES OF THEIR PREVENTION », JOURNAL OF AGRICULTURE AND ENVIRONMENT, no 2 (3), (ISSN2564-890X, DOI10.23649/jae.2017.2.3.1, lire en ligne, consulté le )
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Daily Times - 24 juillet 2007, « David Bowie of the dog world », sur archives.dailytimes.com.pk (consulté le ).
(en) GIUSEPPE Prota, DAN-NING Hu, MARIA R. Vincensi et STEVEN A. McCORMICK, « Characterization of Melanins in Human Irides and Cultured Uveal Melanocytes From Eyes of Different Colors », Experimental Eye Research, vol. 67, no 3, , p. 293–299 (ISSN0014-4835, DOI10.1006/exer.1998.0518, lire en ligne, consulté le )
(en) Elena Konovalova, Elena Gladyr, Ol'ga Kostiunina et Nataliya Zinovieva, « CONGENITAL DEFECTS OF BEEF CATTLE BREEDS AND GENERAL PRINCIPLES OF THEIR PREVENTION », JOURNAL OF AGRICULTURE AND ENVIRONMENT, no 2 (3), (ISSN2564-890X, DOI10.23649/jae.2017.2.3.1, lire en ligne, consulté le )
(en) GIUSEPPE Prota, DAN-NING Hu, MARIA R. Vincensi et STEVEN A. McCORMICK, « Characterization of Melanins in Human Irides and Cultured Uveal Melanocytes From Eyes of Different Colors », Experimental Eye Research, vol. 67, no 3, , p. 293–299 (ISSN0014-4835, DOI10.1006/exer.1998.0518, lire en ligne, consulté le )
(en) Elena Konovalova, Elena Gladyr, Ol'ga Kostiunina et Nataliya Zinovieva, « CONGENITAL DEFECTS OF BEEF CATTLE BREEDS AND GENERAL PRINCIPLES OF THEIR PREVENTION », JOURNAL OF AGRICULTURE AND ENVIRONMENT, no 2 (3), (ISSN2564-890X, DOI10.23649/jae.2017.2.3.1, lire en ligne, consulté le )
(en) GIUSEPPE Prota, DAN-NING Hu, MARIA R. Vincensi et STEVEN A. McCORMICK, « Characterization of Melanins in Human Irides and Cultured Uveal Melanocytes From Eyes of Different Colors », Experimental Eye Research, vol. 67, no 3, , p. 293–299 (ISSN0014-4835, DOI10.1006/exer.1998.0518, lire en ligne, consulté le )