@article{VMUMM_2001_6_a1,
     author = {S. I. Bogataya and S. A. Bogatyi and O. D. Frolkina},
     title = {Affinity of volume preserving mappings},
     journal = {Vestnik Moskovskogo universiteta. Matematika, mehanika},
     pages = {10--15},
     year = {2001},
     number = {6},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/VMUMM_2001_6_a1/}
}