@article {2227,
	title = {Verzeichnis der in den Jahren 1951-1955 f{\"u}r die Fauna Finnlands neuhinzugekommenen Insektenarten.},
	journal = {Notulae Entomologicae},
	volume = {36},
	year = {1956},
	pages = {33-50},
	author = {H{\'e}llen, W.}
}
@article {2226,
	title = {Mitteilungen {\"u}ber einige Tenthredinoiden aus Ostfennoskandien II. (Hym.).},
	journal = {Notulae Entomologicae},
	volume = {35},
	year = {1956},
	pages = {107-122},
	author = {H{\'e}llen, W.}
}
@article {2225,
	title = {Studien {\"u}ber pal{\"a}arktische Dolerinen (Hym., Tenthr.)},
	journal = {Notulae Entomologicae},
	volume = {35},
	year = {1956},
	pages = {97-107},
	author = {H{\'e}llen, W.}
}
@article {1488,
	title = {Hockeria bispinosa F. (Hym., Chalc.) i Finland},
	journal = {Notulae Entomologicae},
	volume = {36},
	year = {1956},
	pages = {32},
	author = {H{\'e}llen, W.}
}
