@article{RM_1964_19_6_a17,
     author = {Z. M. Kishkina and M. A. Kreines},
     title = {An example of a~non-nomographable function},
     journal = {Trudy Matematicheskogo Instituta imeni V.A. Steklova},
     publisher = {mathdoc},
     volume = {19},
     number = {6},
     year = {1964},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/RM_1964_19_6_a17/}
}