Difficulties of VHF communication in the region of the Valley of the Apurimac, Ene and Mantaro Rivers in Peru: Challenges of a mountainous area and dense vegetation. LACCEI [Internet]. 2024 Apr. 16 [cited 2025 Dec. 13];1(8). Available from: https://ojs-laccei.2230.com.ar/index.php/laccei/article/view/3415