@misc{indiciaeac9e4f2b12d6, title = {CAN'T MISS: conquer any number task by making important statistics simple. Part 8. Statistical process control: n, np, c, u control charts.}, author = {John P Hansen}, doi = {10.1111/j.1945-1474.2005.tb00567.x}, url = {https://pubmed.ncbi.nlm.nih.gov/16201490/}, note = {Source identifier: 16201490} }