@article{SMZ_2007__48_6_55609,
     author = {Korobkov, M.V.},
     title = {Properties of the -smooth functions with nowhere dense gradient range.},
     journal = {Sibirskij Matematicheskij Zhurnal},
     pages = {1272},
     publisher = {mathdoc},
     volume = {48},
     number = {6},
     year = {2007},
     zbl = {1164.26325},
     language = {en},
     url = {https://geodesic-test.mathdoc.fr/item/SMZ_2007__48_6_55609/}
}