@article{10_4153_CJM_1993_064_2,
     author = {Carro, Mar{\'\i}a J. and Soria, Javier},
     title = {Boundedness of {Some} {Integral} {Operators}},
     journal = {Canadian journal of mathematics},
     pages = {1155--1166},
     year = {1993},
     volume = {45},
     number = {6},
     doi = {10.4153/CJM-1993-064-2},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/CJM-1993-064-2/}
}