[[1] National Geodetic Survey Datasheets, http://www.ngs.noaa.gov/cgi-bin/datasheet.prl]Search in Google Scholar
[[2] http://mapper.acme.com/?ll=39.11778,–106.44472&z=14&t=T]Search in Google Scholar
[[3] British Columbia GNIS Query Page, http://www.ilmb.gov.bc.ca/bcgn-bin/bcg10?name=25218]Search in Google Scholar
[[4] http://mapper.acme.com/?ll=57.09150,–132.37101&z=13&t=T]Search in Google Scholar
[[5] Topographic prominence, http://en.wikipedia.org/wiki/Topographic_prominence]Search in Google Scholar
[[6] Earl E., Metzler D., 2013. A new topographic functional. Solstice: An Electronic Journal of Geography and Mathematics, vol. XXIV, no. 2. Ann Arbor: Institute of Mathematical Geography. http://www.imagenet.org/]Search in Google Scholar
[[7] http://www.peaklist.org/spire/]Search in Google Scholar
[[8] Fourteener, http://en.wikipedia.org/wiki/Fourteener]Search in Google Scholar
