00341nam a2200121 a 450000500170000002000150001708200160003210000240004824500630007226000360013530000260017170000220019720251203110159.0  a0387989315  a515.35bBEN  aBender, Carl M. and  aAdvanced mathematical methods for scientists and engineers  aNew YorkbSpringer-Verlagc1999  axiv,593p.c23 cm H.B.  aOrszag, Steven A.