00601nam a2200181Ia 4500003000900000008004100009020001800050040001600068080001300084100001600097245011400113260004800227300001600275490004900291650002700340650002700367650002500394IN-BaIIA211028s9999    xx            000 0 eng d  a0-521-40787-7  cIIA Library  a517bPOP  aPopov, V. N 0aFunctional integrals and collective excitationscV. N. Popov                                                   aCambridgebCambridge University Pressc1987  aviii, 216p.  aCambridge Monographs on Mathematical Physics  aCollective excitations  aIntegration functional  aMathematical physics