W. Okrasinski, ON APPROXIMATE SOLUTIONS TO SOME NONLINEAR DIFFUSION-PROBLEMS, Zeitschrift fur angewandte Mathematik und Physik, 44(4), 1993, pp. 722-731
In the paper an approximate solution to a nonlinear diffusion problem
in semiconductor production is considered. Some integral operator meth
ods are used to estimate an error between this approximate solution an
d the exact one.