@article{ZNSL_1974_45_a7,
     author = {A. E. Kagan},
     title = {Estimation of deformation of a~closed convex surface under curvature variation},
     journal = {Zapiski Nauchnykh Seminarov POMI},
     pages = {83--110},
     publisher = {mathdoc},
     volume = {45},
     year = {1974},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZNSL_1974_45_a7/}
}