@article{RM_1989_44_2_a15,
     author = {N. N. Luzin},
     title = {Preface for the book of {I.\,I.~Zhegalkin} and {M.\,I.~Sludskaya} {``Introduction} to {Calculus''}},
     journal = {Trudy Matematicheskogo Instituta imeni V.A. Steklova},
     publisher = {mathdoc},
     volume = {44},
     number = {2},
     year = {1989},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/RM_1989_44_2_a15/}
}