An Optimum Strategy for Producing Precise GPS Satellite Orbits using Double-Differenced Observations. Journal of Engineering, [S. l.], v. 24, n. 9, p. 109–124, 2018. DOI: 10.31026/j.eng.2018.09.08. Disponível em: https://joe.uobaghdad.edu.iq/index.php/main/article/view/639. Acesso em: 29 mar. 2025.