Issue No. 05 - September/October (1985 vol. 2)
N.H. Petschenik , Bell Communications Research, Inc
During the system test phase, "thorough testing" can pass the limits of practicality. Test case selection, based on simple priority rules, is one solution to the problem of practicality vs. thoroughness.
N.H. Petschenik, "Practical Priorities in System Testing", IEEE Software, vol. 2, no. , pp. 18-23, September/October 1985, doi:10.1109/MS.1985.231755