Matdoan, M. Y., Talakua, A., Marsono, M., Safira, D., Suriaslan, A., Zulfadhli, M. and Rukua, A. (2024) “Application of Demerit Chart and Fuzzy Demerit Chart for Monitoring Paper Production”, Pattimura International Journal of Mathematics (PIJMath), 3(2), pp. 77-86. doi: 10.30598/pijmathvol3iss2pp77-86.