GrigorenkoN. V. “Isomonodromic Deformations and the Differential Galois Theory”. Ukrains’kyi Matematychnyi Zhurnal 59, no. 8 (August 25, 2007): 1131-1134. Accessed November 24, 2024. https://umj.imath.kiev.ua/index.php/umj/article/view/3375.