01147nam a2200325 i 450099100104259970753620020507182149.0950316s1977 us ||| | eng 0124547508b10793033-39ule_instLE01306149ExLDip.to Matematicaeng515.64AMS 49S05QA316.L76Logan, John David48876Invariant variational principles /John David LoganNew York :Academic Press,1977xv, 172 p. ;24 cmMathematics in science and engineering.A series of monographs and textbooks,0076-5392 ;138Bibliography: p. 165-168.Includes indexCalculus of variationsInvariants.b1079303323-02-1728-06-02991001042599707536LE013 49S05 LOG11 (1977)12013000025568le013-E0.00-l- 02020.i1089394528-06-02Invariant variational principles339402UNISALENTOle01301-01-95ma -engus 01