Editing Sheffer sequence (section)

==References==
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*{{cite journal |last1=Rota |first1=G.-C. |authorlink1=Gian-Carlo Rota |last2=Kahaner |first2=D. |last3=Odlyzko |first3=A. |authorlink3=Andrew Odlyzko |title=On the Foundations of Combinatorial Theory VIII: Finite Operator Calculus |journal=Journal of Mathematical Analysis and Applications |volume=42 |issue=3 |date=June 1973 |pages=684–750 |doi=10.1016/0022-247X(73)90172-8|doi-access=free }} Reprinted in the next reference.
*{{cite book |last1=Rota |first1=G.-C. |authorlink1=Gian-Carlo Rota |last2=Doubilet |first2=P. |last3=Greene |first3=C. |last4=Kahaner |first4=D. |last5=Odlyzko |first5=A. |last6=Stanley |first6=R. |title=Finite Operator Calculus |publisher=Academic Press |year=1975 |isbn=0-12-596650-4}}
*{{cite journal |last=Sheffer |first=I. M. |authorlink=Isador M. Sheffer |title=Some Properties of Polynomial Sets of Type Zero |journal=[[Duke Mathematical Journal]] |volume=5 |issue=3 |pages=590–622 |year=1939 |doi=10.1215/S0012-7094-39-00549-1}}
*{{Cite book |last=Roman |first=Steven |title=The Umbral Calculus |publisher=Academic Press Inc. [Harcourt Brace Jovanovich Publishers] |location=London |series=Pure and Applied Mathematics |isbn=978-0-12-594380-2 |mr=741185  |year=1984 |volume=111 |url=https://books.google.com/books?id=JpHjkhFLfpgC}} Reprinted by Dover, 2005.
{{refend}}