Contreras Rivero, Gilberto (December 10, 2004). "El caviar mexicano"(PDF). Gaceta Iztacala. Vol. 9, no. 245. UNAM. ISSN0188-7807. Archived from the original(PDF) on August 23, 2007. Retrieved November 14, 2021.
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Contreras Rivero, Gilberto (December 10, 2004). "El caviar mexicano"(PDF). Gaceta Iztacala. Vol. 9, no. 245. UNAM. ISSN0188-7807. Archived from the original(PDF) on August 23, 2007. Retrieved November 14, 2021.
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Contreras Rivero, Gilberto (December 10, 2004). "El caviar mexicano"(PDF). Gaceta Iztacala. Vol. 9, no. 245. UNAM. ISSN0188-7807. Archived from the original(PDF) on August 23, 2007. Retrieved November 14, 2021.