TY - JOUR AU - E. von Collani TI - Economically Optimal c- and np-Control Charts. JO - Metrika PY - 1989 SP - 215 EP - 232 VL - 36 IS - 3-4 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/MET_1989__36_3-4_176234/ ID - MET_1989__36_3-4_176234 ER -