Sr2CuO2Cl2. represents an almost excellent scenario of the 2-D antiferromagnetic CuO2-aircraft and therefore is of distinct interest within the context on the origins of higher TC superconductivity. Now we have calculated experimentally and analyzed theoretically the Ti 2p X-ray photoemission spectra (XPS) as well as resonant enhancement of valence photoemissionat https://okada4dsg.com/