@article{koefender_streck_buriol_trentin_2008,  title={Estimativa do filocrono em calêndula},  volume={38},  ISSN={0103-8478},  url={https://doi.org/10.1590/S0103-84782008000500007},  DOI={10.1590/S0103-84782008000500007},  number={5},  journal={Ciência Rural},  publisher={Universidade Federal de Santa Maria},  author={Koefender, Jana and Streck, Nereu Augusto and Buriol, Galileo Adeli and Trentin, Roberto},  year={2008},  month={Aug},  pages={1246–1250} }