R. En-nadir, H. El Ghazi, A. Jorio, and I. Zorkani, “Ground-state Shallow-donor Binding Energy in (In,Ga)N/GaN Double QWs Under Temperature, Size, and the Impurity Position Effects”, J. Mod. Sim. Mater., vol. 4, no. 1, pp. 1–6, Mar. 2021.