@article{10_37236_367,
     author = {Thomas J. Robinson},
     title = {Formal calculus and umbral calculus},
     journal = {The electronic journal of combinatorics},
     year = {2010},
     volume = {17},
     doi = {10.37236/367},
     zbl = {1226.05050},
     url = {http://geodesic.mathdoc.fr/articles/10.37236/367/}
}