@article{TM_2011_275_a7,
     author = {M. I. Shtogrin},
     title = {Bending of a~piecewise developable surface},
     journal = {Trudy Matematicheskogo Instituta imeni V.A. Steklova},
     pages = {144--166},
     publisher = {mathdoc},
     volume = {275},
     year = {2011},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TM_2011_275_a7/}
}