Media type: E-Article Title: On some Hasse Principles over formally real fields Contributor: Elman, Richard; Lam, Tsit-Yuen; Prestel, Alexander Published: Springer Science and Business Media LLC, 1973 Published in: Mathematische Zeitschrift, 134 (1973) 4, Seite 291-301 Language: English DOI: 10.1007/bf01214693 ISSN: 0025-5874; 1432-1823 Origination: Footnote: Access State: Open Access