SGEM 2016. 16th International Multidisciplinary Scientific GeoConference. Book 3. Water Resources. Forest, Marine and Ocean Ecosystems : conference proceedings. Albena, Bulgaria, 30 June - 6 July 2016. Volume I Hydrology & Water Resources. 1. vyd. Sofia : STEF 92 Technology, 2016. 858 s. ISBN 978-619-7105-61-2. ISSN 1314-2704.