SGEM SGEM 2015. 15th International Multidisciplinary Scientific GeoConference. Water Resources. Forest, Marine and Ocean Ecosystems : conference proceedings. Albena, Bulgaria, 18. - 24. 6. 2015 Volume I Hydrology & Water Resources. -- 1. vyd. -- Sofia : STEF 92 Technology, 2015. -- 794 s. -- ISBN : 978-619-7105-36-0. -- ISSN : 1314-2704.