@article {564,
	title = {Review of Palearctic species of the genus Helophilus Meigen, 1822 (Diptera, Syrphidae)},
	journal = {(Russian)},
	volume = {151},
	year = {1979},
	pages = {64-80},
	keywords = {Helophilus, Key to species, Palaearctic, Syrphidae},
	author = {Violovitsh, N.A.}
}
