References
- Rohl , J. S. 1978 . Generating permutations by choosing . Computer Journal , 21 : 302 – 305 .
- Sedgewick , R. 1977 . Permutation generation methods . ACM Computing Surveys , 9 : 137 – 164 .
- Tenenbaum , A. M. and Augenstein , M. J. 1981 . Data structures using Pascal , Englewood Cliffs, New Jersey : Prentice-Hall .
- Zaks , S. 1984 . A new algorithm for generation of permutations . BIT , 24 : 196 – 204 .