A new approach based on a search of analytic solutions for the main limiting cases and of linking functions describing intermediate region is developed. In frame of this work, analytical formulas for proton form factors in the limiting cases (photoproduction, quasielastic scattering and low-x limit) have been obtained. Connections and transitions between these limiting cases have been studied and linking functions have been found. The obtained dependencies of proton structure functions for the whole kinematic region of variables Q² and x contain practically no free parameters but they are in a good agreement with experimental data.

PACS numbers: 13.60.--r, 13.60.Hb