@article {72,
	title = {Tuoksut kimalaisten el{\"a}m{\"a}ss{\"a} (Odours in the life of bumblebees).},
	journal = {Luonnon Tutkija},
	volume = {94},
	year = {1990},
	pages = {204-211},
	keywords = {Aculeata, Apidae, Bombus},
	author = {Ter{\"a}s, I.}
}
@article {69,
	title = { Kukka ja kimalainen {\textendash} optimaalista ravinnonhankintaa? (Do bumblebees for-age optimally?).},
	journal = {Luonnon Tutkija},
	volume = {89},
	year = {1985},
	pages = {4-11},
	keywords = {Aculeata, Apidae, Bombus},
	author = {Ter{\"a}s, I.}
}
@article {62,
	title = {Suomen kimalaisista ja loiskimalaisista (On Finnish bumblebees and cuckoo bumblebees (Apidae))},
	journal = {Luonnon Tutkija},
	volume = {81},
	year = {1977},
	pages = {1-24},
	keywords = {Aculeata, Apidae, Bombus, pdf},
	author = {Pekkarinen, A. and Ter{\"a}s, I.}
}
