@article{mantovani_prado_pivetta_2018,  title={Impact of Nitrate and Ammonium ratio on Nutrition and Growth of two Epiphytic Orchids},  volume={90},  ISSN={0001-3765},  url={https://doi.org/10.1590/0001-3765201820171008},  DOI={10.1590/0001-3765201820171008},  number={4},  journal={Anais da Academia Brasileira de Ciências},  publisher={Academia Brasileira de Ciências},  author={MANTOVANI, CIBELE and PRADO, RENATO M. and PIVETTA, KATHIA F.L.},  year={2018},  month={Oct},  pages={3423–3431} }