Fuller, William D.; Sanchez, Robert A.; Orgel, Leslie E. (14 June 1972). "Studies in prebiotic synthesis". Journal of Molecular Biology. 67 (1): 25–33. doi:10.1016/0022-2836(72)90383-X. PMID4339529.
Fuller, William D.; Sanchez, Robert A.; Orgel, Leslie E. (14 June 1972). "Studies in prebiotic synthesis". Journal of Molecular Biology. 67 (1): 25–33. doi:10.1016/0022-2836(72)90383-X. PMID4339529.