Balys, Vaidas, and Rimantas Rudzkis. “Statistical Distributions of Thesauri and Their Uses in Classification of Science Publications”. Lietuvos matematikos rinkinys 43, no. spec. (December 22, 2003): 463–467. Accessed October 27, 2025. https://test.zurnalai.vu.lt/LMR/article/view/32508.