Calcium and magnesium biogeochemistry in spruce catchments underlain by felsic, mafic, and ultramafic rocksPavel Krám, Filip Oulehle, Jakub Hruška, František Veselovský, Jan Čuřík, Oldřich Myška, Martin Novák and William H. McDowellE3S Web Conf., 98 (2019) 06007DOI: https://doi.org/10.1051/e3sconf/20199806007