1. A. Stroppa and M. Peressi, Phys. Rev. B 71, 1200 (2005).
2. V. V. Kuznetsov, L. S. Lunin, and V. I. Ratushnyi, Heterostructures Based on Quaternary and Quinary Solid Solutions of III-V (SKNTsVSh, Rostov-on-Don, 2003) [in Russian].
3. R. Campi, Doctoral Thesis (Royal Institute of Technology, KTH, Stockholm).
4. WIPO Patent Application WO/2007/127269.
5. US Patent Application No. 20100297608.