Converse results in the Walsh theory of overconvergence
ESAIM: Modélisation mathématique et analyse numérique, Tome 19 (1985) no. 4, pp. 601-609. 
@article{M2AN_1985__19_4_601_0,
     author = {Cavaretta, A. S. and Sharma, A. Jr. and Varga, R. S.},
     title = {Converse results in the {Walsh} theory of overconvergence},
     journal = {ESAIM: Mod\'elisation math\'ematique et analyse num\'erique},
     pages = {601--609},
     publisher = {AFCET - Gauthier-Villars},
     address = {Paris},
     volume = {19},
     number = {4},
     year = {1985},
     mrnumber = {826226},
     zbl = {0578.41003},
     language = {en},
     url = {http://www.numdam.org/item/M2AN_1985__19_4_601_0/}
}
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Cavaretta, A. S.; Sharma, A. Jr.; Varga, R. S. Converse results in the Walsh theory of overconvergence. ESAIM: Modélisation mathématique et analyse numérique, Tome 19 (1985) no. 4, pp. 601-609. http://www.numdam.org/item/M2AN_1985__19_4_601_0/

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