books.google.se - When an important mathematician celebrates a landmark birthday, other mathematicians sometimes gather together to give papers in appreciation of the life and work of the great person. When a mathematician as influential and productive as Euler celebrates an anniversary as important as the 300th, a single...http://books.google.se/books/about/Euler_at_300.html?hl=sv&id=tK_KRmTf9nUC&utm_source=gb-gplus-shareEuler at 300