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W.  Héllen, ?För Finlands fauna nya Blacus-arter (Hymenoptera, Braconidae).?, Notulae Entomologicae, vol. 54, p. 16, 1974.

W.  Héllen, ?Die Mymariden Finnlands (Hymenoptera: Chalcidoidea).?, Fauna Fennica, vol. 25, pp. 1-31, 1974.