Oliver, Chadwick Dearing (1980-01-01). "Forest development in North America following major disturbances". Forest Ecology and Management. 3: 153–168. doi:10.1016/0378-1127(80)90013-4. ISSN0378-1127.
Roest, S.; Bokelmann, G.S. (1975-12-01). "Vegetative propagation of Chrysanthemum morifolium Ram. in vitro". Scientia Horticulturae. 3 (4): 317–330. doi:10.1016/0304-4238(75)90046-1. ISSN0304-4238.
Oliver, Chadwick Dearing (1980-01-01). "Forest development in North America following major disturbances". Forest Ecology and Management. 3: 153–168. doi:10.1016/0378-1127(80)90013-4. ISSN0378-1127.
Roest, S.; Bokelmann, G.S. (1975-12-01). "Vegetative propagation of Chrysanthemum morifolium Ram. in vitro". Scientia Horticulturae. 3 (4): 317–330. doi:10.1016/0304-4238(75)90046-1. ISSN0304-4238.