@book{debruijn:1961:ama,
    author = {{de Bruijn}, N. G.},
     title = {Asymptotic Methods in Analysis},
    series = {Bibliotheca Mathematica, Vol. IV},
   edition = {2nd},
 publisher = {North-Holland Publishing Co.},
   address = {Amsterdam},
      year = {1961},
     pages = {xii+200},
   mrclass = {41.50},
  mrnumber = {MR0177247 (31 \#1510)},
     zblno = {0109.03502}}