Baumgartner, J. G.; Andreatta, J. A.; Júnior, A. F. Effects of Calcium and Or Boron Deficiency on the Peduncle of Sunflower Inflorescence. PAB 2014, 21 (7), 747-755. https://doi.org/10.1590/S1678-3921.pab1986.v21.14883.