por International Conference Geomechanics 91 (hradec, Ostrava, Checoslovaquia) | Rakowski, Zikmund [editor] | Ceskoslovenska Akademie Ved. Mining Institute | International Bureau of Strata Mechanics | International Society Of Water Jet Technology.
por International Conference Geomechanics 93 (1993 : Hradec, Ostrava, Republica de Checoslovaquia) | Rakowski, Zikmund [editor].