@article{ISU_2018_18_2_a0,
     author = {S. Yu. Antonov and A. V. Antonova},
     title = {To {Chang} theorem. {III}},
     journal = {Izvestiya of Saratov University. Mathematics. Mechanics. Informatics},
     pages = {128--143},
     publisher = {mathdoc},
     volume = {18},
     number = {2},
     year = {2018},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ISU_2018_18_2_a0/}
}