01034nam a2200289 i 4500991001537929707536110531s2011 yu b 000 0 eng d9788680593456b14030317-39ule_instDip.to Matematicaeng512.53AMS 20MLC QA182.K67Kostic, Marko476331Generalized semigroups and cosine functions /Marko KosticBeograd :Matematiécki institut SANU,[2011]352 p. ;24 cmIncludes bibliographical references (p. 335-352)SemigroupsCauchy problemFunctional differential equations.b1403031702-04-1411-01-12991001537929707536LE013 20M KOS11 (2011)12013000215006le013gE18.00-l- 00000.i1537757x08-02-12Generalized semigroups and cosine functions243755UNISALENTOle01311-01-12ma -engyu 00