Van Bael, Sunshine A., Aiello, Annette, Valderrama Cumbrera, Anayansi, Medianero, Enrique, Samaniego, Mirna, and Wright, S. Joseph. 2004. "
General Herbivore Outbreak Following an El Niño-Related Drought in a Lowland Panamanian Forest."
Journal of Tropical Ecology. 20 (6):625–633.