1. D. E. Knuth, (1973)Fundamental Algorithms, Addison-Wesley, Reading, Mass.
2. T. H. Cormen, C. H. Leiserson, and R. L. Rivest (1992)Introduction to Algorithms, McGraw-Hill, Cambridge, Mass.
3. M. D. Atkinson and Robert Beals, Priority queues and permutations, in preparation.
4. M. D. Atkinson and Murali Thiyagarajah, The permutational power of a priority queue, BIT, to appear.