00427nam a2200133Ia 4500082002000000100003600020245005900056260004800115300002600163500004500189500000500234700003000239700002400269  a515.24bL666.AP  aLevitan B. M. and Zhikov, V. V.  aAlmost periodic functions and differential equationsb  aCambridgebCambridge University Pressc1982  ax, 211p. Index, Bibl.  a"Tr. from the Russian by L. W. Longdon".  a  aZhikov, V. V. ; jt. auth.  aLongdon, L. W. ; tr