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| | References for Klein (Site not responding. Last check: ) |
 | | I M Yaglom, Felix Klein and Sophus Lie : evolution of the idea of symmetry in the nineteenth century (Boston, 1988). |
 | | H A Kastrup, The contributions of Emmy Noether, Felix Klein and Sophus Lie to the modern concept of symmetries in physical systems, Symmetries in physics (1600-1980) (Barcelona, 1987), 113-163. |
 | | D E Rowe, 'Jewish mathematics' at Göttingen in the era of Felix Klein, Isis 77 (288) (1986), 422-449. |
| www.gap-system.org /~history/References/Klein.html (274 words) |
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