Citation: Tribaudino, M.; Nestola, F.; Camara, F.; Domeneghetti, M. C. (2002). The high-temperature P2_1/c - C2/c phase transition in Fe-free pyroxene (Ca.15Mg1.85Si2O6): Structural and thermodynamic behavior Sample: dien2, T = 650 deg C. American Mineralogist, 87, pp. 648-657.