@article{simkovic2013theory,
  author = {{\v{S}}imkovic, F.},
  title = {Theory of neutrinoless double beta decay-A brief review},
  journal = {Physics of Particles and Nuclei Letters},
  publisher = {Pleiades Publishing Ltd},
  volume = {10},
  number = {7},
  pages = {623--632},
  year = {2013},
  doi = {10.1134/S154747711307008X},
  issn = {1547-4771}
}