UAV Multispectral Indices and Linear Regression for Estimating Biomass and Carbon in Rubber Plantations. - Piyatida Awichin; Teerawong Laosuwan; Satith Sangpradid; Yannawut Uttaruk; Titipong Phoophathong; Smith Leammanee; Joe Nuchthapho (IEEE Access, 2025)