AndrusyakR. V., Burdeina N. O., and KirilichV. M. 2010. “Quasilinear Hyperbolic Stefan Problem With Nonlocal Boundary Conditions”. Ukrains’kyi Matematychnyi Zhurnal 62 (9), 1173–1199. https://umj.imath.kiev.ua/index.php/umj/article/view/2947.