@article{MS2_1983__53_166868,
     author = {Leonard Y.H. Yap and T.S. Quek},
     title = {Sharpness of {Young's} inequality for convolution.},
     journal = {Mathematica Scandinavica},
     pages = {221--237},
     publisher = {mathdoc},
     volume = {53},
     year = {1983},
     zbl = {0513.22001},
     url = {http://geodesic.mathdoc.fr/item/MS2_1983__53_166868/}
}