Groze, Sever. “The Principle of the Majorant in Solving Operator Equations Which Depend on Parameters”. Anal. Numér. Théor. Approx. 8, no. 2 (August 1, 1979): 177–180. Accessed May 19, 2024. https://ictp.acad.ro/jnaat/journal/article/view/1979-vol8-no2-art7.