Conference PaperComparison of Implicit Time Stepping to the Scheme with "Apparent Heat Capacity" for a Thermal Model of Permafrost with Surface Terrain Dependent Boundary ConditionsPeszynska, M; Mathangadeera, PSequeira, Adelia; Silvestre, Ana; Valtchev, svilen; Janela, Joaoaccepted to Numerical Mathematics and Advanced Applications (ENUMATH 2023) Series: Lecture Notes in Computational Science and Engineering2024-11-01105568042024https://doi.org/1912938; 2309682National Science Foundation