TY - JOUR T1 - High-Altitude Platforms — Present Situation and Technology Trends JO - Journal of Aerospace Technology and Management A1 - d’Oliveira, Flavio Araripe A1 - Melo, Francisco Cristovão Lourenço de A1 - Devezas, Tessaleno Campos SN - 2175-9146 UL - 10.5028/jatm.v8i3.699 VL - 8 Y1 - 2016 PB - Brasil ER -