@article{Garczyñski:1977,
  author  = "W. Garczyñski and K. Urbanowski",
  title   = "On a quasipotential governing the time evolution of a projection of state-vector onto one-dimensional subspace",
  journal = "Bulletin de l'Académie Polonaise des Sciences : Série des Sciences Mathématiques, Astronomiques et Physiques",
  volume  = "Vol. 25",
  number  = "no 4",
  pages   = "427--430",
  year    = "1977",
}