@article{10_1017_S2040618500034900, author = {Tranter, C. J.}, title = {An improved method for dual trigonometrical series}, journal = {Glasgow mathematical journal}, pages = {136--140}, year = {1964}, volume = {6}, number = {3}, doi = {10.1017/S2040618500034900}, url = {http://geodesic.mathdoc.fr/articles/10.1017/S2040618500034900/} }