01074nam--2200361---450-99000177319020331620060302121211.0000177319USA01000177319(ALEPH)000177319USA0100017731920040618d1958----km-y0itay0103----baitaIT|||-||||001yyUgo Foscolo a BresciaL'amore per Marzia Martinengo, La stampa dei Sepolcri, Gli amici bresciani, Battaglie letterarieArturo MarpicatiFirenzeLe Monnier1958XII, 228 p.19 cm20012001001-------2001BresciaVita culturale1806-1812850MARPICATI,Arturo5235ITsalbcISBD990001773190203316VI.3.B. 1655(V C 455)6795 L.M.V CBKUMASIAV41020040618USA011715COPAT39020060302USA011212Ugo Foscolo a Brescia144387UNISA01665nam 2200469I 450 991070587740332120170725143550.0(CKB)5470000002453640(OCoLC)994295750(EXLCZ)99547000000245364020170724j199803 ua 0engurbn|||||||||txtrdacontentcrdamediacrrdacarrierPreconditioning the Helmholtz equation for rigid ducts /Kenneth J. Baumeister, Kevin L. KreiderCleveland, Ohio :National Aeronautics and Space Administration, Lewis Research Center,March 1998.1 online resource (18 pages) illustrationsNASA technical memorandum ;107349"March 1998.""Performing organization: National Aeronautics and Space Administration, Lewis Research Center"--Report documentation page.Includes bibliographical references (pages 5-6).Acoustic propagationnasatDuctsnasatHelmholtz equationsnasatFinite difference theorynasatPreconditioningnasatAcoustic propagation.Ducts.Helmholtz equations.Finite difference theory.Preconditioning.Baumeister Kenneth J.1400246Kreider Kevin L.Lewis Research Center,GPOGPOBOOK9910705877403321Preconditioning the Helmholtz equation for rigid ducts3485381UNINA