Gill, David S.; Marks, P. L. (1991-01-01). "Tree and Shrub Seedling Colonization of Old Fields in Central New York". Ecological Monographs. 61 (2): 183–205. doi:10.2307/1943007. JSTOR1943007.
Gill, David S.; Marks, P. L. (1991-01-01). "Tree and Shrub Seedling Colonization of Old Fields in Central New York". Ecological Monographs. 61 (2): 183–205. doi:10.2307/1943007. JSTOR1943007.