History of the montane forests of the northern Andes

Neotropical Floristic Diversity: Phytogeographical Connections Between Central and South America, Pleistocene Climatic Fluctuations, or an Accident of the Andean Orogeny?

1982 • 903 citations

The Pleistocene Changes of Vegetation and Climate in Tropical South America

1974 • 740 citations

Palynological record of the upheaval of the Northern Andes: A study of the pliocene and lower quaternary of the Colombian Eastern Cordillera and the early evolution of its high-Andean biota

1973 • 215 citations

Trigonobalanus and the Tropical Amphi-Pacific Element in the North Andean Forest

1983 • 38 citations