Hong, P.T.T., Amory-Mazaudier, C. and Minh, L.H. 2014. Simulation of long-term variations of the F2-layercritical frequency f0F2 at the northern tropical crest of ionization at Phu Thuy, Hanoi, Vietnam using the thermosphere-ionosphere-electrodynamicsgeneral circulation model (TIE-GCM). Vietnam Journal of Earth Sciences. 36, 4 (Dec. 2014), 470–479. DOI:https://doi.org/10.15625/0866-7187/36/4/6435.