[1]
S. Väänänen, J. Paukkunen, V. Soon, and E. Budrys, “Occurrence and biology of Pseudogonalos hahnii (Spinola, 1840) (Hymenoptera: Trigonalidae) in Fennoscandia and the Baltic states”, Entomol. Fennica, vol. 29, no. 2, pp. 86–96, Jun. 2018.