Applications of laser-induced breakdown spectroscopy for soil analysis, part II: Review of Elemental Analysis and Soil Classification - Villas-Boas, Paulino Ribeiro; Franco, Marco Aurélio de Menezes; Martin-Neto, Ladislau; Gollany, Hero T; Milori, Debora Marcondes Bastos Pereira (European Journal of Soil Science, 2019)