Sr2CuO2Cl2. Represents an almost best scenario of a two-D antiferromagnetic CuO2-airplane and therefore is of certain curiosity inside the context on the origins of higher TC superconductivity. We've got measured experimentally and analyzed theoretically the Ti 2p X-ray photoemission spectra (XPS) along with the resonant improvement of valence photoemissionat the https://okada4dsg.com/