1. Ananthasubramanian P. G., Yamamoto S., Prabhu T. P., Angchuk D. 2004, Bull. Astr. Soc. India 32, 99
2. Bass M. 2010, Handbook of Optics: Volume V Atmospheric Optics, Modulators, Fiber Optics, X-Ray and Neutron Optics (McGraw-Hill Education)
3. Chen Y., Hahner D., Trubetskov M., et al. 2020 Appl. Phys. B 126, 1
4. Coelho P. R. T. 2014, International Workshop on Stellar Spectral Libraries, 11, 57
5. Henden A. A. 2002, JAAVSO, 31, 11