@article{05626025, title = {On an expansion theorem in the finite operator calculus of G.-C. Rota.}, journal = {General Mathematics}, volume = {16}, year = {2008}, pages = {149-154}, zbl = {1199.05013}, language = {en}, url = {http://dml.mathdoc.fr/item/05626025} }
Popa, Emil C. On an expansion theorem in the finite operator calculus of G.-C. Rota.. General Mathematics, Tome 16 (2008) pp. 149-154. http://gdmltest.u-ga.fr/item/05626025/