1. Sorting;Martin;Comp. Surveys,1971
2. The art of computer programming. Vol.3, Sorting and Searching;Knuth,1973
3. Methods of Information Handling;Bourne,1963
4. Emperical hyperbolic distributions (Bradford-Zipf-Mandelbrot) for bibliometric description and prediction;Fairthorne;J. Docum.,1969
5. Variety generation—a reinterpretation of Shannon's mathematical theory of communication, and its implications for information science;Lynch;J. ASIS,1977