Dlshad Mahmood Saleh, و Dashty Ismil Jamil. "Construction Three Charts Based on Inter Quartile Range and Comparison of Efficiency With Three Charts Based on Range". QALAAI ZANIST JOURNAL 2, no. 3 (يناير 24, 2021): 317–329. تاريخ الوصول مايو 20, 2024. https://journal.lfu.edu.krd/ojs/index.php/qzj/article/view/189.