3 literature references for Illex argentinus (Castellanos, 1960):

Author: Sweeney, M. J. and C. F. E. Roper / N. A. Voss, M. Vecchione, R. B. Toll and M. J. Sweeney, eds.
Year: 1998
Title: Classification, type localities and type repositories of recent Cephalopoda
Source: Systematics and Biogeography of Cephalopods. Smithsonian Contributions to Zoology, 586 (I-II)
Author: Castellanos, Z. J. A. de
Year: 1960
Title: Una nueva especie de calamar Argentino, Ommastrephes argentinus sp. nov. (Mollusca, Cephalopoda)
Source: Neotropica, 6 (20)
Author: Roper, Clyde F. E., C. C. Lu and Katharina Mangold
Year: 1969
Title: A new species of Illex from the western Atlantic and distributional aspects of other Illex species (Cephalopoda: Oegopsida)
Source: Proceedings of the Biological Society of Washington, 82