References

Burton, D. M. 2006. Elementary Number Theory. Tata McGraw-Hill Publishing Company Limited. https://books.google.com/books?id=XMQjuoTqqRMC.
Davenport, H. 2008. The Higher Arithmetic: An Introduction to the Theory of Numbers. Cambridge University Press. https://books.google.com/books?id=VdMhAwAAQBAJ.
Rosen, K. H. 2005. Elementary Number Theory and Its Applications. Alternative eText Formats Series. Pearson/Addison Wesley. https://books.google.com/books?id=jD0lAQAAIAAJ.
William, S. 2016. Cryptography and Network Security - Principles and Practice, 7th Edition. Pearson Education India. https://books.google.com/books?id=AhDCDwAAQBAJ.