According to the article Comemos três a quatro mil toneladas de caracóis por ano, by Joana Ferreira da Costa, in the 26 August 2007 edition (n.6358) of the daily newspaper PúblicoArchived 2008-02-12 at the Wayback Machine.
Collin, Rachel (2018), Leonard, Janet L. (ed.), "Transitions in Sexual and Reproductive Strategies Among the Caenogastropoda", Transitions Between Sexual Systems: Understanding the Mechanisms of, and Pathways Between, Dioecy, Hermaphroditism and Other Sexual Systems, Cham: Springer International Publishing, pp. 193–220, doi:10.1007/978-3-319-94139-4_7, ISBN978-3-319-94139-4
Selander RK, Ochman H (1983). "The genetic structure of populations as illustrated by molluscs". Isozymes Curr Top Biol Med Res. 10: 93–123. OCLC115471993. PMID6354995.
According to the article Comemos três a quatro mil toneladas de caracóis por ano, by Joana Ferreira da Costa, in the 26 August 2007 edition (n.6358) of the daily newspaper PúblicoArchived 2008-02-12 at the Wayback Machine.
Selander RK, Ochman H (1983). "The genetic structure of populations as illustrated by molluscs". Isozymes Curr Top Biol Med Res. 10: 93–123. OCLC115471993. PMID6354995.