Joel E. Henry, Sallie M. Henry Quantitative Assessment of the Software Maintenance Process and Requirements Volatility. [Citation Graph (0, 0)][DBLP] ACM Conference on Computer Science, 1993, pp:346-351 [Conf]
Joel E. Henry Test case selection for simulations in the maintenance of real-time systems. [Citation Graph (0, 0)][DBLP] Journal of Software Maintenance, 2000, v:12, n:4, pp:229-248 [Journal]