Issue No. 04 - April (1978 vol. 11)
R.A. DeMillo , Georgia Institute of Technology
In many cases tests of a program that uncover simple errors are also effective in uncovering much more complex errors. This so-called coupling effect can be used to save work during the testing process.
R. DeMillo, F. Sayward and R. Lipton, "Hints on Test Data Selection: Help for the Practicing Programmer," in Computer, vol. 11, no. , pp. 34-41, 1978.