@article{Szary:2017,
  author  = "A. Szary and J. van Leeuwen",
  title   = "On the Origin of the Bi-drifting Subpulse Phenomenon in Pulsars",
  journal = "Astrophysical Journal",
  volume  = "Vol. 835",
  number  = "no. 2",
  pages   = "1--13",
  year    = "2017",
}