@article{DAN_1970_194_4_a7,
     author = {A. S. Kronrod and V. A. Kronrod and I. A. Faradzhev},
     title = {The choice of the step in the computation of derivatives},
     journal = {Doklady Akademii Nauk},
     pages = {767--769},
     publisher = {mathdoc},
     volume = {194},
     number = {4},
     year = {1970},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1970_194_4_a7/}
}