Novikov, S. V., Staddon, C., Sahonta, S., Oliver, R., Humphreys, C., & Foxon, C. (2016). Molecular beam epitaxy of free-standing bulk wurtzite AlxGa1-xN layers using a highly efficient RF plasma source. physica status solidi (c), 13(5-6), https://doi.org/10.1002/pssc.201510166