@Book{RANLP-2013:2013,
  editor    = {Ruslan Mitkov  and  Galia Angelova  and  Kalina Boncheva},
  title     = {Proceedings of the International Conference Recent Advances in Natural Language Processing RANLP 2013},
  month     = {September},
  year      = {2013},
  address   = {Hissar, Bulgaria},
  publisher = {INCOMA Ltd. Shoumen, BULGARIA},
  url       = {http://www.aclweb.org/anthology/R13-1}
}