@article {2202,
	title = {[Sawfly Ardis sulcata Cam. new for Finnish fauna]},
	journal = {Notulae Entomologicae},
	volume = {15},
	year = {1935},
	pages = {107},
	author = {H{\'e}llen, W.}
}
@article {2201,
	title = {Mitteilungen {\"u}ber einige Tenthredinoiden Finnlands},
	journal = {Notulae Entomologicae},
	volume = {15},
	year = {1935},
	pages = {15-26},
	author = {H{\'e}llen, W.}
}
@book {764,
	title = {Enumeratio Insectorum Fenniae. II. Hymenoptera. 1. Symphyta et Aculeata.},
	year = {1935},
	pages = {15},
	address = {Helsinki},
	author = {Forsius, R. and H{\'e}llen, W.}
}
