Wanke, M. C, A. G Markelz, K.  Unterrainer, S. J Allen, and R.  Bhatt. ?Third Harmonic Generation In A Gaas/Algaas Superlattice In The Bloch Oscillator Regime?. In Hot Carriers In Semiconductors, eds. Hess, Karl, Leburton, J.P., Ravaioli, U.:161-163. New York, NY: Plenum Press, 1996. https://www.springer.com/gp/book/9781461380351.

Wanke, M. C, A.G.  Markelz, K.  Unterrainer, S. J Allen, and R.  Bhatt. ?Third Harmonic Generation In A Gaas/Algaas Superlattice In The Bloch Oscillator Regime?. Proceedings Of The International Conference On Hot Carriers In Seminconductors. Chicago, IL, 1995.