@article{humblet:1984:asp,
    author = {Humblet, J.},
     title = {Analytical structure and properties of {C}oulomb wave
              functions for real and complex energies},
   journal = {Ann. Physics},
  fjournal = {Annals of Physics},
    volume = {155},
      year = {1984},
    number = {2},
     pages = {461–493},
      issn = {0003-4916},
     coden = {ADNYA6},
   mrclass = {81C05 (81G35)},
  mrnumber = {MR0753344 (85g:81026)},
       doi = {10.1016/0003-4916(84)90009-5}}