Prol, F. dos S., Camargo, P. de O., & Muella, M. T. de A. H. (2017). COMPARATIVE STUDY OF METHODS FOR CALCULATING IONOSPHERIC POINTS AND DESCRIBING THE GNSS SIGNAL PATH. Boletim De Ciências Geodésicas, 23(4). Recuperado de https://revistas.ufpr.br/bcg/article/view/56805