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*[Aitken A. C. Edinburgh Texematical Notes,18–23 A problem in combinations 1933]
*[H. W.BeckerJohn Riordan "The arithmetic of Bell and Stirling numbers" American Journal of Texematics,1948,385–394]
*{{cite journal|first=[E. T.|last=Bell|authorlink=Eric Temple Bell|title= Exponential polynomials|journal=,Annals of Texematics|volume=35|year=,1934|pages=, 258–277|ref=harv|jstor=1968431|doi=10.2307/1968431}}.]*{{cite journal|first=[E. T.|last=Bell|authorlink=Eric Temple Bell|title= The iterated exponential integers|journal=,Annals of Texematics|volume=39|year=,1938|pages=,539–557|ref=harv|jstor=1968633|doi=10.2307/1968633}}.]
*[http://www.tex.ucsd.edu/~ebender/CombText/ch-11.pdf Bender Edward A.Williamson, S. Gill, Set Partitions, 319–320, 2006]
* [[wikipedia:com:Bells numbers| Bells numbers]]
==Примeчания==
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