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  • Toby Bartels
  • Mathematics
  • 2004 (First Published: 14 October 2004)
  • I categorify the definition of fibre bundle, replacing smooth manifolds with differentiable categories, Lie groups with coherent Lie 2-groups, and bundles with a suitable notion of 2-bundle. To linkContinue Reading
  • Toby Bartels, Werner Hein, Ch. Taube, Gunther Berger, H J Mest
  • Medicine
  • Beitrage zur Orthopadie und Traumatologie
  • 1989 (First Published: 1 May 1989)
  • The paper pointed out the resorbable material Ilmaplant-R and the glass ceramic Ilmaplant-L which are used for bone substitution. X-ray, histomorphometric and total mineral contents study wereContinue Reading