@article{olver:1999:uas,
    author = {Olver, F. W. J.},
     title = {On the uniqueness of asymptotic solutions of linear
              differential equations},
   journal = {Methods Appl. Anal.},
  fjournal = {Methods and Applications of Analysis},
    volume = {6},
      year = {1999},
    number = {2},
     pages = {165–174},
      issn = {1073-2772},
   mrclass = {34E05 (34A30 34A45 34M30)},
  mrnumber = {MR1803888 (2002c:34083)},
mrreviewer = {P. K. Palamides},
     links = {\URL[FullText]{http://www.intlpress.com/MAA/p/1999/6_2/MAA-6-2-165-174.pdf}},
     zblno = {0964.34043}}