@article{VMUMM_2007_1_a0,
     author = {R. I. Zhdanov and Yu. V. Ovsienko},
     title = {Estimates for {Sobolev} norms of triangular mappings},
     journal = {Vestnik Moskovskogo universiteta. Matematika, mehanika},
     pages = {3--6},
     publisher = {mathdoc},
     number = {1},
     year = {2007},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/VMUMM_2007_1_a0/}
}