Bertoncelli, D., G. Alves, G. Freiria, F. Furlan, H. Neto, and R. Faria. “Iron Concentrations in the in Vitro Cultivation of Native Brazilian Orchid Schomburgkia Crispa”. Agronomy Science and Biotechnology, Vol. 4, no. 2, Nov. 2018, p. 93, doi:10.33158/ASB.2018v4i2p93.