Experimental investigations of long span complex structuresTärno, Ülo; Zhukovski, Ernest; Shevtshenko, OlgaBulletin of the International Association for Shell and Spatial Structures1995 The investigation of the space structures with the artifical crack systemsTärno, ÜloBulletin of the International Association for Shell and Spatial Structures1995 / 1, p. 11-18: ill