00375nam a2200121Ia 4500082002000000100004700020245005900067260003400126300001400160490003900174500000500213700003500218  a515.72bN163.DC  aNakagami, Yoshiomi and Takesaki, Masamichi  aDuality for crossed products of Von Neumann algebrasb  aBerlinbSpringer-Verlagc1979  aix, 139p.  aLecture notes in Mathematicsv 731  a  aTakesaki, Masamichi; jt. auth.