Kenneth T. Frank, Brian Petrie, Jae S. Choi, William C. Leggett (2005). "Trophic Cascades in a Formerly Cod-Dominated Ecosystem". Science. 308 (5728): 1621–1623. doi:10.1126/science.1113075. PMID15947186.CS1 maint: multiple names: authors list (link)
Kenneth T. Frank, Brian Petrie, Jae S. Choi, William C. Leggett (2005). "Trophic Cascades in a Formerly Cod-Dominated Ecosystem". Science. 308 (5728): 1621–1623. doi:10.1126/science.1113075. PMID15947186.CS1 maint: multiple names: authors list (link)