Havliček, V. (1982). New Pugnacidae and Plectorhynchellidae (Brachiopoda) in the Silurian and Devonian Rocks of Bohemia. Vestník Ústredního ústavu Geologického. 57: 111-114.
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Havliček, V.
1982
New Pugnacidae and Plectorhynchellidae (Brachiopoda) in the Silurian and Devonian Rocks of Bohemia