@article{10_4153_CJM_1972_020_3,
     author = {Bash, David W.},
     title = {Sums and {Products} of {Normal} {Functions}},
     journal = {Canadian journal of mathematics},
     pages = {261--269},
     year = {1972},
     volume = {24},
     number = {2},
     doi = {10.4153/CJM-1972-020-3},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/CJM-1972-020-3/}
}