@article {1771,
	title = {An experiment on dung removal by Aphodius larvae (Scarabaeidae) and earthworms},
	journal = {Oikos},
	volume = {28},
	year = {1977},
	pages = {130-136},
	author = {Holter, P.}
}
@article {1772,
	title = {Effect of dung-beetles (Aphodius spp.) and earthworms on the disappearance of cattle dung},
	journal = {Oikos},
	volume = {32},
	number = {3},
	year = {1979},
	pages = {393-402},
	author = {Holter, P.}
}
