Multivariate chi-square distribution for a nonhomogeneous multinomial scheme
B. I. Selivanov, V. P. Chistyakov

This publication is cited in the following articles:

1. M. P. Savelov, “Two-stage chi-square test and two-dimensional distributions of a Bessel process”, Theory Probab. Appl., 65:4 (2021), 665–672        
2. A. M. Zubkov, M. P. Savelov, “Convergence of the sequence of the Pearson statistics values to the normalized square of the Bessel process”, Discrete Math. Appl., 27:6 (2017), 405–411