Kohara, S.; Ohno, H.; Takata, M.; Usuki, T.; Morita, H.; Suzuya, K.; Akola, J.; Pusztai, L. . (2010). Lead silicate glasses: Binary network-former glasses with large amounts of free volume. Physical Review B, 82(13), 134209–.
doi:10.1103/physrevb.82.134209
