B 126.555288 Problems unilateral analysis. -Unilateral Problems in structural analysis. Proceedings of the 2. meeting on unilateral problems in structural anlysis, Ravello, Sept. 22-24, 1983. Ed. by G(ian~tro) DeI Piero,F(ranco) !1aceri. (83 illustr.) -"'ben, New York: Springer (1985). 387 S. 8 (Internat. Centre for Mechanical Sciences. ~ourses and lect 288.)