Verma, Surendra P., and Alfredo Quiroz-Ruiz. 2018. “Critical Values for 22 Discordancy Test Variants for Outliers in Normal Samples up to Sizes 100, and Applications in Science and Engineering”. Revista Mexicana De Ciencias Geológicas 23 (3):302-19. https://rmcg.unam.mx/index.php/rmcg/article/view/819.