@article {1822,
	title = {Contribution a l{\textquoteright}etude systematique et ecologique des Syrphidae (Dipt.) de la Suisse occidentale},
	journal = {Mitteilungen der Schweizerische Entomologische Gesellschaft},
	volume = {47},
	year = {1974},
	pages = {151-252},
	keywords = {Pipizella, Pipizella pennina (Goeldlin)},
	author = {Goeldlin de Tiefenau, Pierre}
}
