Galaktionov, K. V. (1983). Microphallids in the pygmaeus group. 1. Description of the species Microphallus pygmaeus (Levinsen 1881) nec Odhner, 1905 and M. piriformes (Odhner, 1905) nom. nov. (Trematoda, Microphallidae). Vestnik Leningradskogo Universiteta Biologiya. 1983 (3): 20–30. (In Russian).
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Galaktionov, K. V.
1983
Microphallids in the pygmaeus group. 1. Description of the species Microphallus pygmaeus (Levinsen 1881) nec Odhner, 1905 and M. piriformes (Odhner, 1905) nom. nov. (Trematoda, Microphallidae)
