@article{18384,
  author = {Rumiana Glavcheva and Margarita Matova},
  title = {120th Anniversary of Seismology in Bulgaria: Milestones, Development and Achievements},
  year = {2014},
  journal = {Boletin de Geología},
  volume = {36},
  month = {July/Dec. 2014},
  language = {eng},
}