00377nam a2200121Ia 4500082002000000100004200020245006400062260003900126300001400165490003600179500000500215700003500220  a515.72bM397.AO  aMaslov, V. P. and Nazaikinskii, V. E.  aAsymptotics of operator and pseudo-differential equationsb  aNew YorkbConsultants Bureauc1988  avi, 313p.  aContemporary Soviet Mathematics  a  aNazaikinskii, V. E.; jt. auth.