@article{DAN_1974_217_1_a5,
     author = {E. A. Sevast'yanov},
     title = {Uniform approximations by piecewise monotone functions and some of their applications 
},
     journal = {Doklady Akademii Nauk},
     pages = {27--30},
     publisher = {mathdoc},
     volume = {217},
     number = {1},
     year = {1974},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1974_217_1_a5/}
}