^^ix Matematica. 
Libri.
 
	- Libri.
- Crisis in Physics & Mathematics, in 
	Russia & West.  Novikov. 2002.
- Geometry Revisited 1967 H. S. M. 
Coxeter and S. L. Greitzer.
	
- The differential and integral 
	calculus. 1836. Augustus De Morgan (1806 – 1871).
- From Euclid to Riemann.
 
 
http://www.bioinfo.org.cn/~wangchao/maa/r.Proofs_from_THE_BOOK_4th.pdf