POKORNÝ, Richard et al. Mineral resources in Iceland : coal mining. First published. [Newcastle-upon-Tyne] : Cambridge Scholars Publishing, 2021. 1 online zdroj (275 stran). Available on Internet: <https://ebookcentral.proquest.com/lib/ujep-ebooks/reader.action?docID=6543644> ISBN 978-1-5275-6786-3.