@article{10_4153_CJM_1970_141_3,
     author = {Cohn, Richard M.},
     title = {A {Difference-Differential} {Basis} {Theorem}},
     journal = {Canadian journal of mathematics},
     pages = {1224--1237},
     year = {1970},
     volume = {22},
     number = {6},
     doi = {10.4153/CJM-1970-141-3},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/CJM-1970-141-3/}
}