Thomas, A.L. and Costa, J.A. 1993. Growth of soybean seedlings as affected by cotyledon shading and its reserves. Pesquisa Agropecuaria Brasileira. 28, 8 (Aug. 1993), 925–929. DOI:https://doi.org/10.1590/S1678-3921.pab1993.v28.3955.