1. Benecke, U. and Nordmeyer, A. H. Carbon uptake and allocation byNothofagus solandrivar.cliffortioides(Hook. f.) Poole andPinus confortaDouglas ex Loudon ssp.contortaat montane and subalpine altitudes. Ecology of subalpine zones. Proceedings of IUFRO Workshop August 1982, Oregon State University, Corvallis, Oregon. Forest Research Laboratory, Oregon State University. pp.9–21.In
2. Photosynthetic Light Environments in a Lowland Tropical Rain Forest in Costa Rica