@article {1432,
	title = {Zur Kenntnis der Cynipiden-fauna Islands.},
	journal = {G{\"o}teborgs Kungliga Vetenskaps- och Vitterhetssamh{\"a}lles Handlingar},
	volume = {2},
	year = {1931},
	pages = {1-8},
	author = {H{\'e}llen, W.}
}
@book {1125,
	title = { Suomen el{\"a}imet 1: Myrkkypisti{\"a}iset (Hymenoptera Aculeata) 1, Petopisti{\"a}iset (Sphecidae)},
	year = {1931},
	pages = { 168 s.},
	publisher = {WSOY. Porvoo.},
	organization = {WSOY. Porvoo.},
	address = {Porvoo},
	author = {Pulkkinen, A.}
}
