@article {23069,
	title = {Etudes sur les larves du genre Phronia},
	journal = {Entomologiske Meddelelser},
	volume = {23},
	year = {1943},
	pages = {337-351},
	author = {Steenberg, C. M.}
}
@article {23067,
	title = {Etude sur deux esp{\`e}ces dont les larves se forment de leurs excrements une couche protectrice: La Phronia sternua Winn. et la P. johannae n.sp. (Diptera, Nematocera)},
	journal = {Videnskabelige Meddelelser fra Dansk Naturhistorisk Forening},
	volume = {78},
	year = {1924},
	pages = {1-68, 13 fig.},
	author = {Steenberg, C. M.}
}
@article {23068,
	title = {Recerches sur la matamorphose d{\textquoteright}un Mycetophile Delopsis aterrima (Zett.) (Diptera Nematocera)},
	journal = {DET KONGELIGE DANSKE VIDENSKABERNES SELSKAB BIOLOGISKE MEDDELELSER},
	volume = {14},
	number = {1},
	year = {1938},
	pages = {1-29, 8 pl.},
	author = {Steenberg, C. M.}
}
