1. “Beweis eines Ausdruckes, von welchem die Bionomial-Formel ein einzelner Fall ist,”;Abel;Crelle,1826
2. A.Z. Broder, “The r-Stirling numbers,” Technical Report STAN-CS-82–949, Dept. of Computer Science, Stanford University, Stanford, California, 1982.
3. “Weighted Stirling numbers of the first and second kind-I,”;Carlitz;The Fibonacci Quarterly,1980
4. “Weighted Stirling numbers of the first and second kind-II,”;Carlitz;The Fibonacci Quarterly,1980
5. A. Cauchy, Exercises de Mathématiques, Paris, 1826.