@article{Cao Long:1984,
  author  = "V. Cao Long and S. Janeczko",
  title   = "Quantum generator and singularities",
  journal = "Acta Physica Polonica A",
  volume  = "Vol. 66",
  number  = "no 6",
  pages   = "505--516",
  year    = "1984",
}