- Optics Letters, Vol. 38, Issue 6, pp. 980-982 (March 2013)
- R. C. Botha, H. J. Strauss, C. Bollig, W. Koen, O. Collett, N. V. Kuleshov, M. J. D. Esser, W. L. Combrinck, H. M. von Bergmann
- Optics Express, Vol. 21, Issue 9, pp. 11376-11381 (May 2013)
- Stefan Piehler, Xavier Délen, Martin Rumpel, Julien Didierjean, Nicolas Aubry, Thomas Graf, Francois Balembois, Patrick Georges, Marwan Abdou Ahmed