@InCollection{Konacki:2000,
  author    = "M. Konacki and A. Maciejewski",
  title     = "Semi-analytic theory of motion for the PSR B1257 + 12 planetary system",
  pages     = "77--80",
  year      = "2000",
  booktitle = "Pulsar astronomy - 2000 and beyond IAU colloquium 177, ISBN: 1583810293",
  publisher = "Astronomical Society of the Pacific",
  address   = "San Francisco",
  series    = "Book on recent development in astronomy and astrophysics : 202",
}