@article{katz:1975:ccv,
    author = {Katz, Nicholas M.},
     title = {The congruences of {C}lausen-von {S}taudt and {K}ummer for
              {B}ernoulli-{H}urwitz numbers},
   journal = {Math. Ann.},
  fjournal = {Mathematische Annalen},
    volume = {216},
      year = {1975},
    number = {1},
     pages = {1–4},
      issn = {0025-5831},
   mrclass = {14K15 (10A40 14G25)},
  mrnumber = {MR0387293 (52 \#8136)},
mrreviewer = {M. Basmakov},
       doi = {10.1007/BF02547966},
     zblno = {0303.10028}}