00853nam0-22003131i-450-99000062961040332120001010000062961FED01000062961(Aleph)000062961FED0100006296120001010d--------km-y0itay50------baitay-------001yyEXAMPLES TO EXTREMUM AND VARATIONAL PRINCIPLES IN MECHANICSBESD D.s.l.s.e.s.d.DinamicaStress waves.VibrazioniMeccanicaBesdo,Dieter54466ITUNINARICAUNIMARCBK99000062961040332107 G-195 MU.5105DINSCDINSCEXAMPLES TO EXTREMUM AND VARATIONAL PRINCIPLES IN MECHANICS315489UNINAING01