@article{10_1017_S0017089500000975,
     author = {Okikiolu, G. O.},
     title = {On inequalities for integral operators},
     journal = {Glasgow mathematical journal},
     pages = {126--133},
     year = {1970},
     volume = {11},
     number = {2},
     doi = {10.1017/S0017089500000975},
     url = {http://geodesic.mathdoc.fr/articles/10.1017/S0017089500000975/}
}