@article {Einspahr:1960:0015-749X:221,
	author = "Einspahr, Dean W. and Joranson, Philip N.",
	title = "Late Flowering in Aspen and its Relation to Naturally Occurring Hybrids",
	journal = "Forest Science",
	volume = "6",
	number = "3",
	year = "1960",
	abstract = "",
	pages = "221-224",
	url = "http://www.ingentaconnect.com/content/saf/fs/1960/00000006/00000003/art00007"
}