1. Aerne, L. A., Champ, C. W., & Rigdon, S. E. (1991). Evaluation of control charts under linear trend. Communications in Statistics Theory and Methods,20, 3341–3349.
2. Asbagh, N. A. (1985). Performance of cusum and combined shewhart-cusum charts under linear trend. Master’s thesis, Department of Statistics, University of Southwestern Louisiana, Lafayette.
3. Bissell, A. F. (1984). The performance of control charts and cusums under linear trend. Applied Statistics,33, 145–151.
4. Bissell, A. F. (1986). Corrigendum: The performance of control charts and cusums under linear trend. Applied Statistics,35, 214–214.
5. Brook, D., & Evans, D. A. (1972). An approach to the probability distribution of CUSUM run length. Biometrika,59, 539–549.