About one two-dimensional regional Stefan type problem in multicoherent area

In this article the two-dimensional regional problem of Stefan’s type in multicoherent area with the nonlinear source, arising in cryosurgery is considered. Statement of a problem for a case of two needlelike probes of the cylindrical form, completely immersed in a biological tissue is resulted. On its example the method of research of the similar problems, reduced to the consecutive decision of two-dimensional problems in one-coherent area is offered.