@article{BUMI_1962_3_17_3_a0,
     author = {Singhai, B. C.},
     title = {The summability by logarithmic means of the ultra-spherical  series.},
     journal = {Bollettino della Unione matematica italiana},
     pages = {255--262},
     publisher = {mathdoc},
     volume = {Ser. 3, 17},
     number = {3},
     year = {1962},
     zbl = {0113.27302},
     mrnumber = {150534},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/BUMI_1962_3_17_3_a0/}
}