@article{MT_2009_12_1_a3,
     author = {K. Zh. Kudaibergenov},
     title = {Preservation and violation of homogeneity of models under a~special expansion},
     journal = {Matemati\v{c}eskie trudy},
     pages = {117--129},
     publisher = {mathdoc},
     volume = {12},
     number = {1},
     year = {2009},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MT_2009_12_1_a3/}
}