JINA - Segue Virtual Journal, 27 March 2009
Volume 4, Issue 13 (58 Articles)
- # 41 - Unpublished opening lecture for the course on the theory of relativity in Argentina, 1925
- arXiv.org - Astrophysics - Volume: 2009, Issue: 27 Mar
- arXiv:0903.2401 (cross-list from physics.hist-ph) [pdf]