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BARNETT, A.; BRACCINI, J. M.; AWRUCH, C. A. An overview on the role of Hexanchiformes in marine ecosystems: biology, ecology and conservation status of a primitive order of modern sharks. Journal of Fish Biology. 2012-04, roč. 80, čís. 5, s. 966–990. Dostupné online [cit. 2023-12-23]. ISSN0022-1112. DOI10.1111/j.1095-8649.2012.03242.x. (anglicky)
BARNETT, A.; BRACCINI, J. M.; AWRUCH, C. A. An overview on the role of Hexanchiformes in marine ecosystems: biology, ecology and conservation status of a primitive order of modern sharks. Journal of Fish Biology. 2012-04, roč. 80, čís. 5, s. 966–990. Dostupné online [cit. 2023-12-23]. ISSN0022-1112. DOI10.1111/j.1095-8649.2012.03242.x. (anglicky)
KRIWET, Jürgen; KLUG, Stefanie. A new Jurassic cow shark (Chondrichthyes, Hexanchiformes) with comments on Jurassic hexanchiform systematics. Swiss Journal of Geosciences. 2011-12, roč. 104, čís. S1, s. 107–114. Dostupné online [cit. 2023-12-23]. ISSN1661-8726. DOI10.1007/s00015-011-0075-z. (anglicky)
DALY-ENGEL, Toby S.; BAREMORE, Ivy E.; GRUBBS, R. Dean. Resurrection of the sixgill shark Hexanchus vitulus Springer & Waller, 1969 (Hexanchiformes, Hexanchidae), with comments on its distribution in the northwest Atlantic Ocean. Marine Biodiversity. 2019-04-01, roč. 49, čís. 2, s. 759–768. Dostupné online [cit. 2023-12-23]. ISSN1867-1624. DOI10.1007/s12526-018-0849-x. (anglicky)