@article{JRAM_1978__298_151962,
     author = {W. Kratz and B.L.R. Shawyer},
     title = {A {strong-Riesz} mean-value theorem with applications to summability factor theorems.},
     journal = {Journal f\"ur die reine und angewandte Mathematik},
     pages = {16--31},
     year = {1978},
     volume = {298},
     zbl = {0365.40005},
     url = {http://geodesic.mathdoc.fr/item/JRAM_1978__298_151962/}
}