@article{ardill:1978:sbf,
    author = {Ardill, R. W. B. and Moriarty, K. J. M.},
     title = {Spherical {B}essel functions $j_n$ and $y_n$ of integer order and
              real argument},
   journal = {Comput. Phys. Comm.},
  fjournal = {Computer Physics Communications},
    volume = {14},
      year = {1978},
    number = {3-4},
     pages = {261–265},
      note = {Single-precision Fortran, maximum accuracy 10S.},
      issn = {0010-4655},
       doi = {10.1016/0010-4655(78)90019-X},
     links = {\URL[Code]{http://cpc.cs.qub.ac.uk/summaries/ACXM}}}