Sequence enumeration and the de hinspace Bruijn-van Aardenne-Ehrenfest-Smith-Tutte theorem

D. M. Jackson, I. P. Goulden
1979 Canadian Journal of Mathematics - Journal Canadien de Mathematiques  
doi:10.4153/cjm-1979-054-x fatcat:oel3r4jgafas7p3dkzpc7zeflq