@article {1662,
	title = { Role of parasitoids in termination of a mass occurrence of Yponomeuta evonymellus (Lepidoptera, Yponomeutidae) in northern Finland. },
	journal = {Notulae Entomologicae},
	volume = {59},
	year = {1979},
	pages = {133-137},
	author = {Py{\"o}rnil{\"a}, M. and Py{\"o}rnil{\"a}, A.}
}
