Citation: Gonzalez Gonzalez, J.C.; Landinez Tellez, D.A.; Albino Aguiar, J.; Bustamante Dominguez, A. (2001). Structural refinement of (Y1-x Cax) Sr Ba Cu2.80 (P O4)0.20 Oy. Physica C (Amsterdam), 354, pp. 375-378.
Formula: Ba Ca0.25 Cu2.8 O7.8 P0.2 Sr Y0.75
Chemical name:(Y0.75 Ca0.25) Sr Ba Cu2.8 (P O4)0.2 O7