@article{zu224522,
           title = {Parallel postulate},
          author = {M. Yangulova},
       publisher = {???????: ??????????? ??-? ????????? ?.?},
            year = {2017},
         journal = {??????????? ???????? ?????????? ??????????? ?????????? ?????? ? ????????????????? ????????: ??????? ?????????? ??? ??????????? ???????-?????????? ???????????? ??????????? ??? ????????? ???????? ??????????????: ???????, 12 ?????? 2017 ?.},
             url = {http://eprints.zu.edu.ua/24522/}
}