@article{spigler:1980:rzc,
    author = {Spigler, Renato},
     title = {Some results on the zeros of cylindrical functions and of
              their derivatives},
   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 = {38},
      year = {1980},
    number = {1},
     pages = {67–85},
  language = {Italian. English summary},
   mrclass = {33A40 (65A05)},
  mrnumber = {MR608931 (82g:33020)},
mrreviewer = {M. E. Muldoon}}