A selfsimilar behavior of the urban structure in the spatially inhomogeneous modelE. Y. Echkina, O. I. Inovenkov and D. P. KostomarovEur. Phys. J. B, 50 1-2 (2006) 215-220DOI: https://doi.org/10.1140/epjb/e2006-00145-6