$ 0 0 Ein ausgewogenerer Nachruf im J. Geom.: http://download.springer.com/static/pdf/768/art%253A10.1007%252Fs00022-015-0285-z.pdf?originUrl=http%3A%2F%2Flink.springer.com%2Farticle%2F10.1007%2Fs00022-015-0285-z&token2=exp=1449830219~acl=%2Fstatic%2Fpdf%2F768%2Fart%25253A10.1007%25252Fs00022-015-0285-z.pdf%3ForiginUrl%3Dhttp%253A%252F%252Flink.springer.com%252Farticle%252F10.1007%252Fs00022-015-0285-z*~hmac=5ff4a4372468da1d9940937825a6d02cc553fc14795c14050eab6884799c14ea