@article{Makhmutov:2016Hs,
  author = "Makhmutov, Vladimir S.",
  title = "{Unusual cosmic ray increases observed during several solar flares in 2011-2013 }",
  doi = "10.22323/1.236.0065",
  journal = "PoS",
  year = 2016,
  volume = "ICRC2015",
  pages = "065"
}