Radavičius, Marijus, and Pavel Samusenko. “Goodness-of-Fit Tests for Sparse Nominal Data Based on Grouping”. Nonlinear Analysis: Modelling and Control 17, no. 4 (October 25, 2012): 489–501. Accessed July 5, 2024. https://www.journals.vu.lt/nonlinear-analysis/article/view/14053.