@article{Czerwinska:2016Ft,
  author = "Czerwinska, Olga  and  Enomoto, S.  and  Lalak, Zygmunt",
  title = "{Particle production in the background with VEV depending on time}",
  doi = "10.22323/1.258.0048",
  journal = "PoS",
  year = 2016,
  volume = "PLANCK 2015",
  pages = "048"
}