@book {720,
	title = {Red Data book of European butterflies (Rhopalocera). },
	series = {Nature and Environment},
	volume = {99},
	year = {1999},
	pages = {260},
	publisher = {Council of Europe Publishing},
	organization = {Council of Europe Publishing},
	address = {Strasbourg},
	author = {Van Swaay, C.A.M. and Warren, M.S.}
}
