@article{vrahatis:1997:tdt,
    author = {Vrahatis, M. N. and Ragos, O. and Skiniotis, T. and
              Zafiropoulos, F. A. and Grapsa, T. N.},
     title = {The topological degree theory for the localization and
              computation of complex zeros of {B}essel functions},
   journal = {Numer. Funct. Anal. Optim.},
  fjournal = {Numerical Functional Analysis and Optimization. An
              International Journal},
    volume = {18},
      year = {1997},
    number = {1-2},
     pages = {227–234},
      issn = {0163-0563},
     coden = {NFADOL},
   mrclass = {33C10 (55M25 65D20)},
  mrnumber = {MR1442028 (97m:33002)},
       doi = {10.1080/01630569708816756},
     zblno = {0892.33002}}