Nygren, Pekka, Florent Maraux, and Germán A. Sánchez. 1993. “Solar Radiation Transmission in the Canopy of Erythrina Poeppigiana (Walpers) O.F. Cook”. Pesquisa Agropecuaria Brasileira 28 (2): 167-76. https://doi.org/10.1590/S1678-3921.pab1993.v28.3864.