REFERENCES
- Andrews, G. E. (1976). The Theory of Partitions. Encyclopedia of Mathematics and its Applications, Vol. 2. Reading, MA: Addison-Wesley.
- Comtet, L. (1974). Advanced Combinatorics. The Art of Finite and Infinite Expansions. Dordrecht: D. Reidel Publishing Co.
- Heubach, S., Mansour, T. (2010). Combinatorics of Compositions and Words. Discrete Mathematics and Its Applications. Boca Raton, FL: CRC, Taylor & Francis Group.
- Mansour, T. (2013). Combinatorics of Set Partitions. Discrete Mathematics and Its Applications. Boca Raton, FL: CRC, Taylor & Francis Group.
- OEIS Foundation, Inc. (2011). The On-Line Encyclopedia of Integer Sequences. oeis.org
- Riordan, J. (1958). An Introduction to Combinatorial Analysis. New York: John Wiley & Sons.