@article{INTF_1989_70_a0,
     author = {Yu. G. Reshetnyak},
     title = {Two-dimensional manifolds of bounded curvature},
     journal = {Itogi Nauki i Tekhniki. Seriya Sovremennye Problemy Matematiki. Fundamental'nye Napravleniya},
     pages = {7--189},
     year = {1989},
     volume = {70},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/INTF_1989_70_a0/}
}