Petrauskas, Kostas Ramutis, Ignas Skučas, Irena Petrauskienė, and Antanas Būda. “Solution of Riccati Equation”. Lietuvos matematikos rinkinys 42, no. spec. (December 20, 2002): 194–201. Accessed August 17, 2024. https://www.journals.vu.lt/LMR/article/view/32880.