1. E. Hecht, Optics 4th edn. (Addison Wesley, San Francisco, CA, USA, 2002) pp. 100–104.
2. 1.3 Refraction, openstax, https://openstax.org/books/university-physics-volume-3/pages/1-3-refraction
3. E. Hecht, Optics 4th edn. (Addison Wesley, San Francisco, CA, USA, 2002) pp. 116.
4. D. J. Griffiths, Introduction to electrodynamics. 3rd edn. (Prentice Hall, Upper Saddle River, NJ, USA, 1999) pp. 331–333
5. 6.7 Stokes’ Theorem, openstax, https://openstax.org/books/calculus-volume-3/pages/6-7-stokes-theorem