@article{10_14708_cm_v26i2_6166,
     author = {S. R. Agrawal and P. S. Kantawala},
     title = {On the {Norlund} summability of orthogonal series},
     journal = {Commentationes Mathematicae},
     pages = { 195--200},
     publisher = {mathdoc},
     volume = {26},
     number = {2},
     year = {1986},
     doi = {10.14708/cm.v26i2.6166},
     language = {pl},
     url = {http://geodesic.mathdoc.fr/articles/10.14708/cm.v26i2.6166/}
}