@article{SMZ_2006__47_5_54739,
     author = {Korobkov, M.V.},
     title = {An analog of {Sard's} theorem for -smooth functions of two variables.},
     journal = {Sibirskij Matematicheskij Zhurnal},
     pages = {1083},
     publisher = {mathdoc},
     volume = {47},
     number = {5},
     year = {2006},
     zbl = {1150.26322},
     language = {en},
     url = {https://geodesic-test.mathdoc.fr/item/SMZ_2006__47_5_54739/}
}