@article {38092,
	title = {Should we thin young aspen stands?. In : S. Navratil and P. B. Chapman, editors, Aspen management for the 21st century. Proceedings of a symposium held November 20-21, 1990, Edmonton, Alberta},
	year = {1991},
	pages = {135-139},
	institution = {Canadian Forest Service, Northern Forest Research Centre and Poplar Council of Canada},
	author = {Bella, I. E. and Yang, R. C.}
}
