@article {37904,
	title = {ENDOR study of free radicals in Athabasca asphaltene},
	volume = {7},
	year = {1991},
	pages = {217-223},
	publisher = {AOSTRA Journal of Research},
	author = {Niizuma, Shigeya and Iwaizumi, Masamoto and Strausz, Otto P.}
}
