@article{arthur_calcium_1999,
	title = {Calcium and magnesium in wood of northern hardwood forest species: relations to site characteristics},
	volume = {29},
	journal = {Can. J. For. Res.},
	author = {Arthur, M. A. and Siccama, T. G. and Yanai, R. D.},
	year = {1999},
	keywords = {HBR}
}