1. Abramowitz, M., Stegun, I. A.: Handbook of mathematical functions. New York: Dover Publications 1970
2. Aho, A. V., Hopcroft, J. E., Ullman, J. D.: The design and analysis of computer algorithms. Reading (Mass.): Addison-Wesley 1974
3. Boothroyd, J.: Sort of a section of the elements of an array by determining the rank of each element (Algorithm 25); Ordering the subscripts of an array section according to the magnitudes of the elements (Algorithm 26). Computer J. 10, pp308?310. [See also notes by R. S. Scowen in Computer J. 12, 408?409 (1969) and by A. D. Woodall in Computer J. 13 (1970)]
4. Brawn, B. S., Gustavson, F. G., Mankin, E.: Sorting in a paging environment. Comm. ACM 13, 483?494 (1970)
5. Cocke, J., Schwartz, J. T.: Programming languages and their compilers. Preliminary notes. Courant Inst, of Math. Sciences, New York University (1970)