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Ditchkoff, Stephen S.; Holtfreter, Robert W.; Williams, Brian L. (September 2017). "Effectiveness of a bounty program for reducing wild pig densities". Wildlife Society Bulletin. 41 (3): 548–555. Bibcode:2017WSBu...41..548D. doi:10.1002/wsb.787.{{cite journal}}: CS1 maint: unflagged free DOI (link)
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Doron, Gideon; Kronick, Richard (1977). "Single Transferrable Vote: An Example of a Perverse Social Choice Function". American Journal of Political Science. 21 (2): 303–311. doi:10.2307/2110496. ISSN0092-5853. JSTOR2110496.
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Animal and Plant Health Inspection Service (27 May 2015). "Chapter 2: Alternatives; Section 2. Methods Dismissed"(PDF). Feral Swine Damage Management: A National Approach. U.S. Department of the Interior Fish and Wildlife Service; U.S. Department of Agriculture Natural Resource Conservation Service. United States Department of Agriculture, APHIS. p.78. Final Environmental Impact Statement. Archived(PDF) from the original on 20 May 2023.
Department for Communities and Local Government (2002). "Fire"Archived 2004-08-01 at the Wayback Machine. In Consultation on the Local Government Finance Formula Grant Distribution. Retrieved 10 November 2006.
Doron, Gideon; Kronick, Richard (1977). "Single Transferrable Vote: An Example of a Perverse Social Choice Function". American Journal of Political Science. 21 (2): 303–311. doi:10.2307/2110496. ISSN0092-5853. JSTOR2110496.