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@article{DAN_1977_235_3_a11, author = {N. A. Shirokov}, title = {Approximate entropy of continua}, journal = {Doklady Akademii Nauk}, pages = {546--549}, publisher = {mathdoc}, volume = {235}, number = {3}, year = {1977}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DAN_1977_235_3_a11/} }
N. A. Shirokov. Approximate entropy of continua. Doklady Akademii Nauk, Tome 235 (1977) no. 3, pp. 546-549. http://geodesic.mathdoc.fr/item/DAN_1977_235_3_a11/