González Prieto, L. A., P. González-Pumariega Solís, and D. González Palomares. “Louis-Joseph Proust and the First Analysis of Asturian Coal. Chronicle of Some Forgotten Chemical Tests in the Mining-Industrial History of Asturias”. Boletín Geológico Y Minero, vol. 131, no. 4, Dec. 2020, pp. 857-78, doi:10.21701/bolgeomin.131.4.019.