@article{RM_1984_39_1_a15,
     author = {I. V. Kulikov},
     title = {On the extension of generalized derivatives},
     journal = {Trudy Matematicheskogo Instituta imeni V.A. Steklova},
     pages = {167--168},
     publisher = {mathdoc},
     volume = {39},
     number = {1},
     year = {1984},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/RM_1984_39_1_a15/}
}