@misc{gravel+and+boulders+mining+from+mountain+stream+beds,
    author = {Radecki-Pawlik, Artur i Kidová, Anna i Lehotsky, Milan i Rusnák, Miloš i Manson, Russell i Radecki-Pawlik, Bartosz},
    title = {Gravel and boulders mining from mountain stream beds},
    journal = {E3S Web of Conferences},
    publisher = {EDP Sciences},
    date = {2019},
    number = {Vol. 106 (01005)}
}