Laser-Induced Breakdown Spectroscopy (LIBS) for tropical soil fertility analysis - Tavares, Tiago R; Mouazen, Abdul M; Nunes, Lidiane C; Santos, Felipe R. dos; Melquiades, Fábio L; Silva, Thainara R. da; Krug, Francisco José; Molin, José Paulo (Soil & Tillage Research, 2022)