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@article{DAN_1974_216_5_a11, author = {B. S. Tsirel'son}, title = {On the sum of periodic functions and an extension operator continuous in measure}, journal = {Doklady Akademii Nauk}, pages = {1001--1003}, publisher = {mathdoc}, volume = {216}, number = {5}, year = {1974}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DAN_1974_216_5_a11/} }
B. S. Tsirel'son. On the sum of periodic functions and an extension operator continuous in measure. Doklady Akademii Nauk, Tome 216 (1974) no. 5, pp. 1001-1003. http://geodesic.mathdoc.fr/item/DAN_1974_216_5_a11/