Rebenko, O., and Yu. Pogorelov. “Kirkwood–Salzburg Equation for Connected Correlation Functions”. Ukrains’kyi Matematychnyi Zhurnal 77, no. 4 (June 11, 2025): 265–276. Accessed December 5, 2025. https://umj.imath.kiev.ua/index.php/umj/article/view/8350.