1. Counting and Measuring;Von Helmholtz,1930
2. Mathematics: The Loss of Certainty;Kline,1980
3. Le programme ultra-intuitionniste des fondements des mathématiques;Ésénine-Volpine,1960
4. Rosinger. On the Safe Use of Inconsistent Mathematics;Elemer;arXiv,2008
5. Strict Finitism as a Viable Alternative in the Foundations of Mathematics;Van Bendegem;Log. Anal.,1994