Smith, Julie W.; Benkman, Craig W. (April 2007). "A Coevolutionary Arms Race Causes Ecological Speciation in Crossbills". The American Naturalist. 169 (4): 455–465. doi:10.1086/511961. PMID17273981. S2CID23415653.
Benkman, Craig W. (May 1999). "The Selection Mosaic and Diversifying Coevolution between Crossbills and Lodgepole Pine". The American Naturalist. 153 (S5): S75 –S91. doi:10.1086/303213. PMID29578779. S2CID4309706.
Benkman, Craig W. (February 1993). "Adaptation to Single Resources and the Evolution of Crossbill (Loxia) Diversity". Ecological Monographs. 63 (3): 305–325. doi:10.2307/2937103. JSTOR2937103.
Benkman, Craig W. (December 2016). "The Natural History of the South Hills Crossbill in Relation to Its Impending Extinction". The American Naturalist. 188 (6): 589–601. doi:10.1086/688904. PMID27860509. S2CID3903767.
Coops, Nicholas C.; Waring, Richard H. (19 August 2010). "A process-based approach to estimate lodgepole pine (Pinus contorta Dougl.) distribution in the Pacific Northwest under climate change". Climatic Change. 105 (1–2): 313–328. doi:10.1007/s10584-010-9861-2. S2CID54177131.
Benkman, Craig W. (February 1993). "Adaptation to Single Resources and the Evolution of Crossbill (Loxia) Diversity". Ecological Monographs. 63 (3): 305–325. doi:10.2307/2937103. JSTOR2937103.
Smith, Julie W.; Benkman, Craig W. (April 2007). "A Coevolutionary Arms Race Causes Ecological Speciation in Crossbills". The American Naturalist. 169 (4): 455–465. doi:10.1086/511961. PMID17273981. S2CID23415653.
Benkman, Craig W. (May 1999). "The Selection Mosaic and Diversifying Coevolution between Crossbills and Lodgepole Pine". The American Naturalist. 153 (S5): S75 –S91. doi:10.1086/303213. PMID29578779. S2CID4309706.
Benkman, Craig W. (December 2016). "The Natural History of the South Hills Crossbill in Relation to Its Impending Extinction". The American Naturalist. 188 (6): 589–601. doi:10.1086/688904. PMID27860509. S2CID3903767.
Smith, Julie W.; Benkman, Craig W. (April 2007). "A Coevolutionary Arms Race Causes Ecological Speciation in Crossbills". The American Naturalist. 169 (4): 455–465. doi:10.1086/511961. PMID17273981. S2CID23415653.
Benkman, Craig W. (May 1999). "The Selection Mosaic and Diversifying Coevolution between Crossbills and Lodgepole Pine". The American Naturalist. 153 (S5): S75 –S91. doi:10.1086/303213. PMID29578779. S2CID4309706.
Benkman, Craig W. (December 2016). "The Natural History of the South Hills Crossbill in Relation to Its Impending Extinction". The American Naturalist. 188 (6): 589–601. doi:10.1086/688904. PMID27860509. S2CID3903767.
Coops, Nicholas C.; Waring, Richard H. (19 August 2010). "A process-based approach to estimate lodgepole pine (Pinus contorta Dougl.) distribution in the Pacific Northwest under climate change". Climatic Change. 105 (1–2): 313–328. doi:10.1007/s10584-010-9861-2. S2CID54177131.