Page, F.C. & Willumsen, N.B.S., 1980. Some observations on Gocevia placopus (Huelsmann, 1974), an amoeba with a flexible test, and on Gocevia-like organisms from Denmark, with comments on the genera Gocevia and Hyalodiscus. J. Nat. Hist. 14: 413-431.
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Willumsen, N.B.S., 1982. Chaos zoochlorellae nov. sp. (Gymnamoebia, Amoebidae) from a Danish freshwater pond. J. Nat. Hist. 16: 803-813.
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