DABBAKUTI, J R K Kumar; RATNAM, D. Venkata; SUNDA, Surendra. Modelling of ionospheric time delays based on adjusted spherical harmonic analysis. Aviation, [S. l.], v. 20, n. 1, p. 1–7, 2016. DOI: 10.3846/16487788.2016.1162197. Disponível em: https://journals.vilniustech.lt/index.php/Aviation/article/view/693. Acesso em: 12 may. 2025.