1. Stochastic modelling of the first-citation distribution;Burrell Q;Scientometrics,2001
2. Obsolescence of computing literature
3. Citation measures of hard science, soft science, technology and nonscience. In Communication Among Scientists and Engineers, C.E. Nelson and D.K. Pollack, Eds. D.C. Heath and Company, Lexington;De Solla Price D.J;MA,1970
4. Networks of Scientific Papers