Kaufman, Donald W.; Courtney, Mark W.; Chu, Penn R. (1982). "The First Three Years of NSF's Population Biology and Physiological Ecology Program". BioScience. 32 (1): 51–53. doi:10.2307/1308755. JSTOR1308755.
Kaufman, Donald W.; Courtney, Mark W.; Chu, Penn R. (1982). "The First Three Years of NSF's Population Biology and Physiological Ecology Program". BioScience. 32 (1): 51–53. doi:10.2307/1308755. JSTOR1308755.