W.  Héllen, ?[Sawfly Xyela piliserra Thoms. from Uleåborg, Finland].?, Notulae Entomologicae, vol. 19, p. 48, 1939.

W.  Héllen, ?[Fenusella Wuestneii Kon. from Muonio, Finland]?, Notulae Entomologicae, vol. 18, p. 142, 1939.

W.  Héllen, ?Zur Ichneumonidenfauna Finnlands (Hym.).?, Notulae Entomologicae, vol. 19, pp. 52-63, 1939.