- Optics Express, Vol. 19, Issue 25, pp. 25151-25160 (December 2011)
- Matthias Wichmann, Benedikt Scherger, Steffen Schumann, Sina Lippert, Maik Scheller, Stefan F. Busch, Christian Jansen, Martin Koch
- Optics Express, Vol. 19, Issue 27, pp. 26883-26890 (December 2011)
- Jen-Tang Lu, Chih-Hsien Lai, Tzu-Fang Tseng, Hua Chen, Yuan-Fu Tsai, Yuh-Jing Hwang, Hung-chun Chang, Chi-Kuang Sun