1. S. A. Lerner and J. M. Asian: Opt. Eng. 39 (2000) 792.
2. M. F. Bal: Dr. Thesis, Technique University Delft, Delft (2003).
3. O. E. Marines: Dr. Thesis, Delft, Technique University Delft, Delft (2006).
4. Wang Cheng: Dr. Thesis, University of Alabama, Birmingham (1992).
5. H. Kang, S. Hansen, and J. Schoot: Proc. SPIE 6921 (2008) 69213I.