@article {1413,
	title = {Verzeichnis der in den Jahren 1921-1925 fur die Fauna Finnlands neu hinzugekommenen Insektenarten.},
	journal = {Notulae Entomologicae},
	volume = {6},
	year = {1926},
	pages = {27-96},
	author = {Hellen, W.}
}
@article {1414,
	title = {Zur Kenntnis der Braconiden (Hym.) Finnlands. I. Subfam. Braconinae (part.), Rhogadinae und Spathiinae.},
	journal = {Acta Societatis pro Fauna et Flora Fennica},
	volume = {56(12)},
	year = {1927},
	pages = {1-59},
	author = {Hellen, W.}
}
@article {1415,
	title = {Fur die Fauna Finnlands neue Braconiden (Hym.). II.},
	journal = {Notulae Entomologicae},
	volume = {25},
	year = {1946},
	pages = {130-137},
	author = {Hellen, W.}
}
@article {1416,
	title = {Hymenopterenfang am Licht.},
	journal = {Notulae Entomologicae},
	volume = {33},
	year = {1953},
	pages = {103-109},
	author = {Hellen, W.}
}
@article {1417,
	title = {Zur Kenntnis der Braconidae: Cyclostomi Finnlands.},
	journal = {Notulae Entomologicae},
	volume = {37(2)},
	year = {1957},
	pages = {33-52},
	author = {Hellen, W.}
}
@article {1412,
	title = {Veranderungen in der Kenntnis der Insektenfauna Finnlands bis zum Jahre 1921.},
	journal = {Notulae Entomologicae},
	volume = {3},
	year = {1923},
	pages = {29-64},
	author = {Hellen, W.}
}
