@article {308,
	title = {Western hemisphere <i>Sphaerophoria</i>},
	journal = {Miscellaneous Publications of the Entomological Society of Ontario},
	volume = {9},
	number = {1},
	year = {1973},
	note = {pages and title uncertain (only partly photocopied), author name incomplete},
	pages = {5-13},
	keywords = {key, Sphaerophoria, Syrphidae},
	author = {Knutson, L.V.}
}
@article {2099,
	title = {Taxonomic revision of aphid-killing flies on the genus Sphaerophoria in the Western Hemisphere (Syrphidae)},
	journal = {Miscellaneous publications of the Entomological Society of America},
	volume = {9},
	year = {1973},
	pages = {1-50},
	keywords = {Sphaerophoria, Sphaerophoria (Sphaerophoria), Sphaerophoria (Sphaerophoria) scripta (Linnaeus)},
	author = {Knutson, L.V.}
}
@article {224,
	title = {International Code of Zoological Nomenclature: amendment proposed to third edition: proposal concerning Article 51c. Z.N.(S.) 2474},
	journal = {Bulletin Of Zoological Nomenclature},
	volume = {41},
	number = {3},
	year = {1984},
	pages = {149-150},
	address = {London},
	keywords = {Comprehensive Zoology, deletion of Article 51c, INTERNATIONAL CODE OF ZOOLOGICAL NOMENCLATURE, p. 150, Proposed amendment to third edition, Syrphidae},
	author = {Gagne, R.J. and Thompson, F. C. and Knutson, L.V.}
}
