@article {783,
	title = {Zur Kenntnis der Bethyliden und Dryiniden Finnlands. },
	journal = {Medd. Soc. Fauna Flora Fennica},
	volume = {45},
	year = {1920},
	pages = {277-290},
	author = {H{\'e}llen, W.}
}
@article {782,
	title = {{\"U}ber finl{\"a}ndische Goldwespen. },
	journal = {Medd. Soc. Fauna Flora Fennica},
	volume = {45},
	year = {1920},
	pages = {203-213},
	author = {H{\'e}llen, W.}
}
@article {781,
	title = { En f{\"o}r faunan ny representant f{\"o}r parasitstekelsl{\"a}ktet Gonatopus},
	journal = {Medd. Soc. Fauna Flora Fennica},
	volume = {45},
	year = {1920},
	pages = {185-186},
	author = {H{\'e}llen, W.}
}
@article {780,
	title = {En f{\"o}r landet ny Andrena-art. },
	journal = {Medd. Soc. Fauna Flora Fennica},
	volume = {41},
	year = {1917},
	pages = {178-179},
	author = {H{\'e}llen, W.}
}
