@article{hieu_ferreira_he_tang_2014,  title={Study on cycle-slip detection and repair methods for a single dual-frequency global positioning system (GPS) receiver},  volume={20},  ISSN={1982-2170},  url={https://doi.org/10.1590/S1982-21702014000400054},  DOI={10.1590/S1982-21702014000400054},  number={4},  journal={Boletim de Ciências Geodésicas},  publisher={Universidade Federal do Paraná},  author={Hieu, La Van and Ferreira, Vagner G. and He, Xiufeng and Tang, Xu},  year={2014},  month={Oct},  pages={984–1004} }