@article{righetto_beleia_ferreira_1999,  title={Physicochemical stability of natural or pre-sweetened frozen passion fruit juice},  volume={42},  ISSN={1516-8913},  url={https://doi.org/10.1590/S1516-89131999000400003},  DOI={10.1590/S1516-89131999000400003},  number={4},  journal={Brazilian Archives of Biology and Technology},  publisher={Instituto de Tecnologia do Paraná - Tecpar},  author={Righetto, Andrea Mara and Beleia, Adelaide and Ferreira, Sandra Helena P.},  year={1999} }