جای خالی عدد نپر در کتابهای متوسطه

[1] A. Azarang, The Persian Tarof in Mathematics, Math. Intelligencer, 33 no. 4 (2011) pp. 1.

[2] M. Hassani, Cycles in graphs and derangements, Math. Gaz., 88 (2004) 123–126.

[3] M. Hassani, Derangements and Applications, J. Integer Seq. (JIS), 6 (2003) no. 1 pp. 8, Article 03.1.2.

[4] M. Hassani, On the Arithmetic–Geometric mean inequality, Tamkang J. Math., 44 (2013) 453–456.

[5] M. Hassani and A. Sofo, Sharp bounds for the constant e, Vietnam Journal of Mathematics, to appear.

[6] O. A. S. Karamzadeh, One-line proof of the AM-GM inequality, Math. Intelligencer, 33 no.2 (2011) pp. 3.

[7] N. Schaumberger, The AM-GM Inequality via x^۱/x , College Mathematics Journal, 20 (1989) 320.

[8] J. J. O’Connor and Edmund F. Robertson, The MacTutor History of Mathematics archive:
http://www-history.mcs.st-andrews.ac.uk/index.html