[
[Aps76] Apostol, Tom M. (1976) Introduction to Analytic Number Theory, Springer-Verlag., xii+ 338.
]Search in Google Scholar
[
[Dun99] Dunham, William. (1999) Euler: The Master of Us All, Mathematical Association of America, 22, xxviii+185.
]Search in Google Scholar
[
[Mat02] Matthews, Robert A. J. (2002) Pi in the Sky, Nature 374, 681-682.
]Search in Google Scholar
[
[Wen] Wenning, Carl J., Spherical Trigonometry, TCAA Guide 10. http://tcaa.us/TCAAGuides.aspx
]Search in Google Scholar
[
[Git] https://github.com/astronexus/HYG-Database
]Search in Google Scholar
[
[Sage] https://sagecell.sagemath.org/?q=davfuu
]Search in Google Scholar
