@article{10_1017_S2040618500033815,
     author = {Boyd, A. V.},
     title = {Multiplication of {Strongly} {Summable} {Series}},
     journal = {Glasgow mathematical journal},
     pages = {29--33},
     year = {1958},
     volume = {4},
     number = {1},
     doi = {10.1017/S2040618500033815},
     url = {http://geodesic.mathdoc.fr/articles/10.1017/S2040618500033815/}
}