S.L. LimMichael B.C. KhooW.L. TeohM. Xie2024-12-312024-12-312015-0810.1016/j.ijpe.2015.04.007https://dspace-cris.utar.edu.my/handle/123456789/9256Optimal designs of the variable sample size and sampling interval<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" altimg="si0001.gif" overflow="scroll"><mml:mover accent="true"><mml:mi>X</mml:mi><mml:mo>¯</mml:mo></mml:mover></mml:math>chart when process parameters are estimatedjournal-article