Häggström, Martin Lindström, Göran Cobos, Carlos Martínez, Julio Roberto Merlos, Leonardo Alonzo, Roberto Dimas Castillo, Glenda Sirias, Carolina Miranda, Douglas Granados, Jorge Alfaro, Rosario Robles, Edgar Rodríguez, Mercedes Moscote, Rigel
(Swedish Meteorological and Hydrological Institute (SMHI), 1990)