@article{10_4153_CJM_1966_047_4,
     author = {Barros-Neto, Jose},
     title = {On the {Smoothness} of {General} {Kernels}},
     journal = {Canadian journal of mathematics},
     pages = {443--448},
     year = {1966},
     volume = {18},
     number = {1},
     doi = {10.4153/CJM-1966-047-4},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/CJM-1966-047-4/}
}