@article{babic2018boundb,
  author = {Babi{\v{c}}, A. and {\v{S}}tef{\'a}nik, D. and Krivoruchenko, M.I. and {\v{S}}imkovic, F.},
  title = {Bound-State Double-Beta Decay},
  journal = {Journal of Physics: Conference Series},
  publisher = {IOP Publishing},
  volume = {1056},
  pages = {012002},
  year = {2018},
  doi = {10.1088/1742-6596/1056/1/012002},
  issn = {1742-6596}
}