Cole, Ken; Fisher, Jessica; Ironside, Kirsten; Mead, Jim; Koehler, Peter (2013). "The biogeographic histories of Pinus edulis and Pinus monophylla over the last 50,000 years". Quaternary International. 310: 96–110. Bibcode:2013QuInt.310...96C. doi:10.1016/j.quaint.2012.04.037.
Holmgren, Camille; Betancourt, Julio; Rylander, Kate (2010). "A long-term vegetation history of the Mojave– Colorado Desert ecotone at Joshua Tree National Park". Journal of Quaternary Science. 25 (2): 222–226. Bibcode:2010JQS....25..222H. doi:10.1002/jqs.1313. S2CID130075610.
harvard.edu
ui.adsabs.harvard.edu
Cole, Ken; Fisher, Jessica; Ironside, Kirsten; Mead, Jim; Koehler, Peter (2013). "The biogeographic histories of Pinus edulis and Pinus monophylla over the last 50,000 years". Quaternary International. 310: 96–110. Bibcode:2013QuInt.310...96C. doi:10.1016/j.quaint.2012.04.037.
Holmgren, Camille; Betancourt, Julio; Rylander, Kate (2010). "A long-term vegetation history of the Mojave– Colorado Desert ecotone at Joshua Tree National Park". Journal of Quaternary Science. 25 (2): 222–226. Bibcode:2010JQS....25..222H. doi:10.1002/jqs.1313. S2CID130075610.
Holmgren, Camille; Betancourt, Julio; Rylander, Kate (2010). "A long-term vegetation history of the Mojave– Colorado Desert ecotone at Joshua Tree National Park". Journal of Quaternary Science. 25 (2): 222–226. Bibcode:2010JQS....25..222H. doi:10.1002/jqs.1313. S2CID130075610.
