1. Al-Azzawi, A. 2007, Physical Optics: Principles and Practices (Boca Raton: CRC Press), 48
2. Allington-Smith, J., Content, R., & Haynes, R. 1998, SPIE, 3355, 196
3. Atwood, B., Byard, P., Depoy, D.L., Frogel, J., & O’brien, T. 1992, European Southern Observatory Conference and Workshop Proceedings, 42, 693
4. Barden, S. C., & Ingerson, T. E. 1988, In ASCP Conf. Ser. 152, Fiber Optics in Astronomy III, ed. S. Arribas, E., Mediavilla, & F. Watson (San Francisco: ASP), 60
5. Bean, J. L., Seifahrt, A., Hartman, H., Nisson, H., Wiedemann, G., Reiners, A., Dreizler, S., & Henry, T. J. 2010, ApJ, 713, 410