@article{MV_1968_20_3_a8,
     author = {S. R. Singh},
     title = {On the absolute {Riesz} summability factors of infinite series},
     journal = {Matemati\v{c}ki vesnik},
     pages = {311 },
     year = {1968},
     volume = {20},
     number = {3},
     url = {http://geodesic.mathdoc.fr/item/MV_1968_20_3_a8/}
}