Abstract
Approximate similarity solutions to the porous-medium equation, c 1 = ∇ · (c m ∇ c), are obtained in one and two dimensions. The problems considered arise in the modelling of dopant diffusion in semiconductors, the two-dimentional problems corresponding to diffusion under a mask edge.
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King, J.R. Approximate solutions to a nonlinear diffusion equation. J Eng Math 22, 53–72 (1988). https://doi.org/10.1007/BF00044365
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DOI: https://doi.org/10.1007/BF00044365