Liu، Gang (2015). "Dynamical equations for the period vectors in a periodic system under constant external stress". Can. J. Phys. ج. 93 ع. 9: 974. Bibcode:2015CaJPh..93..974L. DOI:10.1139/cjp-2014-0518.
Liu، Gang (2015). "Dynamical equations for the period vectors in a periodic system under constant external stress". Can. J. Phys. ج. 93 ع. 9: 974. Bibcode:2015CaJPh..93..974L. DOI:10.1139/cjp-2014-0518.