Papadopoulos, A. (2014). Metric spaces, convexity and non-positive curvature (Second edition.). European Mathematical Society.
Chicago-Zitierstil (17. Ausg.)Papadopoulos, Athanase. Metric Spaces, Convexity and Non-positive Curvature. Second edition. Zürich: European Mathematical Society, 2014.
MLA-Zitierstil (9. Ausg.)Papadopoulos, Athanase. Metric Spaces, Convexity and Non-positive Curvature. Second edition. European Mathematical Society, 2014.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.