Sr2CuO2Cl2. represents an almost suitable scenario of the 2-D antiferromagnetic CuO2-plane and thus is of individual fascination while in the context in the origins of higher TC superconductivity. We have measured experimentally and analyzed theoretically the Ti 2p X-ray photoemission spectra (XPS) as well as resonant enhancement of valence photoemissionat https://okada4dsg.com/