@article{trani_haag_catani_1981,  title={Growth and exportation of nutrients by apple fruits},  volume={38},  ISSN={0071-1276},  url={https://doi.org/10.1590/S0071-12761981000100034},  DOI={10.1590/S0071-12761981000100034},  number={1},  journal={Anais da Escola Superior de Agricultura Luiz de Queiroz},  publisher={Universidade de São Paulo, Escola Superior de Agricultura},  author={Trani, P.E. and Haag, H.P. and Catani, C.B.},  year={1981},  pages={397–414} }