@article{ernvall:1979:gbn,
    author = {Ernvall, Reijo},
     title = {Generalized {B}ernoulli numbers, generalized irregular primes,
              and class number},
   journal = {Ann. Univ. Turku. Ser. A I},
  fjournal = {Annales Universitatis Turkuensis. Series A. I.
              Astronomica-Chemica-Physica-Mathematica},
    volume = {178},
      year = {1979},
     pages = {1–72},
      issn = {0082-7002},
     coden = {AUTVAP},
   mrclass = {12A35 (10A40 12A50)},
  mrnumber = {MR0533377 (80m:12002)},
mrreviewer = {Wells Johnson},
     zblno = {0403.12010}}