@article{zu214067,
          number = {6},
           title = {????????????? ???????????? ?????? ?? ??? i???????? ???????????? ?????? i ??? ???? A5B5O17},
          author = {?. ?. ????? and ?. ?. ?????????? and ?. ?. ?????},
       publisher = {??????????? ???????? ????},
            year = {2007},
           pages = {149--153},
         journal = {???????? ???????????? ???????? ???? ???????},
             url = {http://eprints.zu.edu.ua/14067/},
        abstract = {The rated (a model of ideal layer perovskite-like structures) and experimental values of the periods of elementary cells of five-layer phases CaLn4?xLnI xTi5O17, SrLn4-xLnI xTi5O17, Ln5-xLnI xTi4FeO17 (Ln=La, Pr, Nd, LnI=Pr, Nd, Sm, Gd, Dy, Yb) are analyzed. The interrelations between the peculiarities of a deformation of their crystal structure and the boundaries of morphotropic transitions of five-layer compounds and phases of the A5B5O17 type are established.}
}