@article{MZM_1977_21_4_a4,
     author = {V. V. Lesin},
     title = {An analog of the system of reference functions corresponding to the {Walsh} functions},
     journal = {Matemati\v{c}eskie zametki},
     pages = {485--493},
     publisher = {mathdoc},
     volume = {21},
     number = {4},
     year = {1977},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_1977_21_4_a4/}
}