@incollection{porubsky:1998:vtc,
    author = {Porubsk\'y, S.},
     title = {{V}oronoi type congruences for {B}ernoulli numbers},
 booktitle = {{V}oronoi's Impact on Modern Science. Book I},
    editor = {Engel, P. and Syta, H.},
 publisher = {Institute of Mathematics of the National Academy of Sciences of
              Ukraine},
   address = {Kyiv},
      year = {1998},
     zblno = {0948.11012}}