Gol’dman, N. “On a Class of Inverse Problems With Cauchy Data for Quasilinear Parabolic Equations”. Numerical Methods and Programming (Vychislitel’nye Metody I Programmirovanie), vol. 5, no. 5, Mar. 2004, pp. 70-82, https://en.num-meth.ru/index.php/journal/article/view/118.