(Ingelesez)Friesen, V.L.; Baker, A.J.; Piatt, J.F. (1996). «Phylogenetic Relationships Within the Alcidae (Charadriiformes: Aves) Inferred from Total Molecular Evidence». Molecular Biology and Evolution 13 (2): 359-367. PMID 8587501. doi:10.1093/oxfordjournals.molbev.a025595.. .
(Ingelesez)Moum, Truls; Arnason, Ulfur; Árnason, Einar (2002). «Mitochondrial DNA Sequence Evolution and Phylogeny of the Atlantic Alcidae, Including the Extinct Great Auk (Pinguinus impennis)». Molecular Biology and Evolution 19 (9): 1434-1439. PMID 12200471. doi:10.1093/oxfordjournals.molbev.a004206.. .
(Ingelesez)Thomas, Gavin H.; Wills, Matthew A.; Székely, Tamás (2004). «A supertree approach to shorebird phylogeny». BMC Evolutionary Biology 4 (1): 28. PMC 515296. PMID 15329156. doi:10.1186/1471-2148-4-28. Material gehigarria.. .
Konyukhov, N.B. (2002). «Possible Ways of Spreading and Evolution of Alcids». Biology Bulletin of the Russian Academy of Sciences (errusieraz) 29 (5): 447-454. S2CID 36133751. doi:10.1023/A:1020457508769.. .
(Ingelesez)Friesen, V.L.; Baker, A.J.; Piatt, J.F. (1996). «Phylogenetic Relationships Within the Alcidae (Charadriiformes: Aves) Inferred from Total Molecular Evidence». Molecular Biology and Evolution 13 (2): 359-367. PMID 8587501. doi:10.1093/oxfordjournals.molbev.a025595.. .
(Ingelesez)Moum, Truls; Arnason, Ulfur; Árnason, Einar (2002). «Mitochondrial DNA Sequence Evolution and Phylogeny of the Atlantic Alcidae, Including the Extinct Great Auk (Pinguinus impennis)». Molecular Biology and Evolution 19 (9): 1434-1439. PMID 12200471. doi:10.1093/oxfordjournals.molbev.a004206.. .
(Ingelesez)Thomas, Gavin H.; Wills, Matthew A.; Székely, Tamás (2004). «A supertree approach to shorebird phylogeny». BMC Evolutionary Biology 4 (1): 28. PMC 515296. PMID 15329156. doi:10.1186/1471-2148-4-28. Material gehigarria.. .
(Ingelesez)Friesen, V.L.; Baker, A.J.; Piatt, J.F. (1996). «Phylogenetic Relationships Within the Alcidae (Charadriiformes: Aves) Inferred from Total Molecular Evidence». Molecular Biology and Evolution 13 (2): 359-367. PMID 8587501. doi:10.1093/oxfordjournals.molbev.a025595.. .
(Ingelesez)Moum, Truls; Arnason, Ulfur; Árnason, Einar (2002). «Mitochondrial DNA Sequence Evolution and Phylogeny of the Atlantic Alcidae, Including the Extinct Great Auk (Pinguinus impennis)». Molecular Biology and Evolution 19 (9): 1434-1439. PMID 12200471. doi:10.1093/oxfordjournals.molbev.a004206.. .
Konyukhov, N.B. (2002). «Possible Ways of Spreading and Evolution of Alcids». Biology Bulletin of the Russian Academy of Sciences (errusieraz) 29 (5): 447-454. S2CID 36133751. doi:10.1023/A:1020457508769.. .