Litvinov, W. G. “A Problem on Nonsteady Flow of a Nonlinear Viscous Fluid in a Deformable Pipe”. Methods of Functional Analysis and Topology 2, no. 3 (December 25, 1996): 85–113. Accessed December 19, 2025. https://zen.imath.kiev.ua/index.php/mfat/article/view/23.