1. Vertical distribution of mycorrhizal colonization, root-hairs and below-ground biomass in three contrasting sites from the tropical high mountains, Mérida, Venezuela;Barnola;Arctic and Alpine Research,1997
2. Ordination and classification of vegetation along an altitudinal gradient in the Venezuean páramos;Baruch;Vegetation,1984
3. Bezada, M., 1990. Geologia glacial del Cuaternario de la région de Santo Domingo–Pueblo Llano–Las Mesitas (Estado Mérida y Trujillo). Ph.D. Thesis, Inst. Venezolano de Investigaciones Cientificas, p. 245.
4. Bezada, M., Kalm, V., Mahaney, W.C., 1995. Pleistocene glaciation in the Venezuelan Andes, INQUA Congress, Abstracts, August 3–10, 1995.
5. Soils and Geomorphology;Birkeland,1999