Ceranka, Bronisław, and Małgorzata Graczyk. “About Some Properties and Constructions of Experimental Designs”. Acta Universitatis Lodziensis. Folia Oeconomica 3, no. 322 (December 8, 2016): [73]–85. Accessed May 4, 2024. https://czasopisma.uni.lodz.pl/foe/article/view/767.