TY - JOUR T1 - Optimized Calibration Plan based on Gray Model GM(1,1) applied in Physical-Photometric and Chemical Laboratories Accredited by ISO/IEC 17025 AU - Carlos Velásquez,Francisco Iturra,Francisco Espín,Consuelo Chasi JO - International Journal of Technology VL - 15 IS - 5 SP - 291 EP - 319 PY - 2024 DA - 2024/09/18 SN - 2087-2100 DO - https://doi.org/10.14716/ijtech.v15i5.5938 UR - https://ijtech.eng.ui.ac.id/article/view/5938