Media type: E-Article Title: Space-Time Trigonometry and Formalization of the “Twin Paradox” for Uniform and Accelerated Motions Contributor: Boccaletti, Dino; Catoni, Francesco; Catoni, Vincenzo imprint: Springer Science and Business Media LLC, 2007 Published in: Advances in Applied Clifford Algebras Language: English DOI: 10.1007/s00006-006-0015-6 ISSN: 0188-7009; 1661-4909 Keywords: Applied Mathematics Origination: Footnote: