2 citations to https://www.mathnet.ru/rus/sigma1405

1. D. Gomez-Ullate, Y. Grandati, R. Milson, “Complete classification of rational solutions of $A_{2n}$-Painleve systems”, Adv. Math., 385 (2021), 1077707        
2. Clarkson P.A. Gomez-Ullate D. Grandati Y. Milson R., “Cyclic Maya Diagrams and Rational Solutions of Higher Order Painleve Systems”, Stud. Appl. Math., 144:3 (2020), 357–385