@article{DAN_1972_206_6_a19,
     author = {A. I. Komkov},
     title = {Polymorphous relations in the compounds of the $\mathrm{TRNbTiO}_6$ and $\mathrm{TRTaTiO}_6$ type},
     journal = {Doklady Akademii Nauk},
     pages = {1353--1354},
     publisher = {mathdoc},
     volume = {206},
     number = {6},
     year = {1972},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1972_206_6_a19/}
}