Carpentieri-Pípolo, Valeria, Joston Simão de Assis, and Ivone Páscoal García. 1999. “Effect of Doses of Lime and Boron in the Helianthus Growth”. Semina: Ciências Agrárias 20 (1):64-66. https://doi.org/10.5433/1679-0359.1999v20n1p64.