@article{muldoon:1981:vro,
    author = {Muldoon, Martin E.},
     title = {The variation with respect to order of zeros of {B}essel
              functions},
   journal = {Rend. Sem. Mat. Univ. Politec. Torino},
  fjournal = {Rendiconti del Seminario Matematico (gi\`a ``Conferenze di
              Fisica e di Matematica'') Universit\`a e Politecnico di
              Torino},
    volume = {39},
      year = {1981},
    number = {2},
     pages = {15–25},
   mrclass = {33A40 (34B30 34C10)},
  mrnumber = {MR705573 (84h:33010)},
mrreviewer = {S. Ahmed},
     zblno = {0524.33003}}