Van Praag, Paul Sur les S-dérivations internes dans les corps. (French) Zbl 0207.34803 C. R. Acad. Sci., Paris, Sér. A 270, 703 (1970). Page: −5 −4 −3 −2 −1 ±0 +1 +2 +3 +4 +5 Show Scanned Page MSC: 12E99 General field theory 13B10 Morphisms of commutative rings PDF BibTeX XML Cite \textit{P. Van Praag}, C. R. Acad. Sci., Paris, Sér. A 270, 703 (1970; Zbl 0207.34803)