@article{Kondej:2013,
  author  = "S. Kondej and D. Krejčiřík",
  title   = "Spectral analysis of a quantum system with a double line singular interaction",
  journal = "Publicationes of the Research Institute for Mathematical Sciences",
  volume  = "Vol. 49",
  number  = "no. 4",
  pages   = "831--859",
  year    = "2013",
}