@article{nardez_krueger_jafelice_schmidt_2018,  title={THE USE OF FUZZY RULE-BASED SYSTEMS IN DETERMINING HORIZONTAL PCO PARAMETERS OF GNSS ANTENNAS},  volume={24},  ISSN={1982-2170},  url={https://doi.org/10.1590/s1982-21702018000300024},  DOI={10.1590/s1982-21702018000300024},  number={3},  journal={Boletim de Ciências Geodésicas},  publisher={Universidade Federal do Paraná},  author={Nardez, Nassau de Nogueira and Krueger, Cláudia Pereira and Jafelice, Rosana Sueli da Motta and Schmidt, Marcio Augusto Reolon},  year={2018},  month={Jul},  pages={367–382} }