Myronov, M.; Sawano, K.; Shiraki, Y.; Mouri, T.; Itoh, K.M. (2008). "Observation of high mobility 2DHG with very high hole density in the modulation doped strained Ge quantum well at room temperature". Physica E. 40 (6): 1935–1937. Bibcode:2008PhyE...40.1935M. doi:10.1016/j.physe.2007.08.142.
Myronov, M.; Sawano, K.; Shiraki, Y.; Mouri, T.; Itoh, K.M. (2008). "Observation of high mobility 2DHG with very high hole density in the modulation doped strained Ge quantum well at room temperature". Physica E. 40 (6): 1935–1937. Bibcode:2008PhyE...40.1935M. doi:10.1016/j.physe.2007.08.142.