TY - JOUR T1 - Energy efficiency of stratosphere heterogeneous wireless networks JO - Physical Communication PY - 2019/02/16 AU - Rao X AU - Zhao L AU - Chu X AU - Chen K-C ED - DO - DOI: 10.1016/j.phycom.2019.02.002 PB - Elsevier BV VL - 34 SP - 19 EP - 26 Y2 - 2025/01/03 ER -