Robinson, Abraham [Luxemburg, Wilhelmus A. J.] Non-standard analysis. Translated from the 1996 English edition of the 1966 original by Franco Dedini. With foreword by Wilhelmus A. J. Luxemburg. (Analisi non standard.) (Italian) Zbl 1314.26036 Rome: Aracne Editrice (ISBN 978-88-548-6427-6). 466 p. (2013). MSC: 26E35 26-02 26-03 01A65 03H05 PDF BibTeX XML Cite \textit{A. Robinson}, Analisi non standard (Italian). Rome: Aracne Editrice (2013; Zbl 1314.26036) OpenURL
Gendron, T. M. The algebraic theory of the fundamental germ. (English) Zbl 1112.14033 Bull. Braz. Math. Soc. (N.S.) 37, No. 1, 49-87 (2006). Reviewer: Aleksandr G. Aleksandrov (Moskva) MSC: 14H30 37C85 57R30 11U10 11K60 PDF BibTeX XML Cite \textit{T. M. Gendron}, Bull. Braz. Math. Soc. (N.S.) 37, No. 1, 49--87 (2006; Zbl 1112.14033) Full Text: DOI arXiv Link OpenURL