RENDU, Jean-Michel. An introduction to cut-off grade estimation. Second edition. Englewood, CO: Published by Society for Mining, Metallurgy, and Exploration, 2014. ISBN 9780873353946. Dostupné také z: https://proxy.k.utb.cz/login?url=http://app.knovel.com/hotlink/toc/id:kpICGE0001/introduction_to_cutoff_grade_estimation_2nd_edition.