Benavides, F., Burbano, J., Burbano, D., Prieto, R. and Torres, C. (2010) “Inferring possible population divergence in Espeletia pycnophylla (Asteraceae) through morphometric and paleogeographic approaches”, Revista de Biología Tropical, 58(4), pp. 1261–1270. doi: 10.15517/rbt.v58i4.5410.