Freud, Sigmund (1877). Beobachtungen über Gestaltung und feineren Bau der als Hoden beschriebenen Lappenorgane des Aals [Observations on the configuration and finer structure of the lobed organs in eels described as testes] (in German). Sitzungsberichte der Kaiserlichen Akademie der Wissenschaften. Mathematisch-Naturwissenschaftliche Classe. Vol. 75, p. 419. Freud's study was in response to Szymon Syrski's book Ueber die Reproductions-Organe der Aale (1874); see Ursula Reidel-Schrewe "Freud's Début in the Sciences" in: Sander L. Gilman, Jutta Birmele, Jay Geller, Valerie D Greenberg (eds.), Reading Freud's Reading, NYU Press, 1995, pp. 1–22.
Mundine, Carolus (1783). De Angillae Ovariis (in Latin). Vol. 6. De Bononiensi Scientiarum et Artium Instituto atque Academia Commentarii. 6:406–18
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Freud, Sigmund (1877). Beobachtungen über Gestaltung und feineren Bau der als Hoden beschriebenen Lappenorgane des Aals [Observations on the configuration and finer structure of the lobed organs in eels described as testes] (in German). Sitzungsberichte der Kaiserlichen Akademie der Wissenschaften. Mathematisch-Naturwissenschaftliche Classe. Vol. 75, p. 419. Freud's study was in response to Szymon Syrski's book Ueber die Reproductions-Organe der Aale (1874); see Ursula Reidel-Schrewe "Freud's Début in the Sciences" in: Sander L. Gilman, Jutta Birmele, Jay Geller, Valerie D Greenberg (eds.), Reading Freud's Reading, NYU Press, 1995, pp. 1–22.
Chow, S.; Kurogi, H.; Mochioka, N.; Kaji, S.; Okazaki, M.; Tsukamoto, K. (2009). "Discovery of mature freshwater eels in the open ocean". Fisheries Science. 75: 257–259. doi:10.1007/s12562-008-0017-5. S2CID39090269.
Aprahamian, Miran; Wood, Peter (February 2021). "Estimation of glass eel ( Anguilla anguilla ) exploitation in the Severn Estuary, England". Fisheries Management and Ecology. 28 (1): 65–75. doi:10.1111/fme.12455. S2CID225134755.
Chow, S.; Kurogi, H.; Mochioka, N.; Kaji, S.; Okazaki, M.; Tsukamoto, K. (2009). "Discovery of mature freshwater eels in the open ocean". Fisheries Science. 75: 257–259. doi:10.1007/s12562-008-0017-5. S2CID39090269.
Aprahamian, Miran; Wood, Peter (February 2021). "Estimation of glass eel ( Anguilla anguilla ) exploitation in the Severn Estuary, England". Fisheries Management and Ecology. 28 (1): 65–75. doi:10.1111/fme.12455. S2CID225134755.