@article{ikebe:1975:tzr,
    author = {Ikebe, Yasuhiko},
     title = {The zeros of regular {C}oulomb wave functions and of their
              derivatives},
   journal = {Math. Comp.},
  fjournal = {Mathematics of Computation},
    volume = {29},
      year = {1975},
     pages = {878–887},
      issn = {0025-5718},
   mrclass = {65D20},
  mrnumber = {MR0378361 (51 \#14529)},
       doi = {10.2307/2005300},
     zblno = {0308.65015}}