Artifacts 9
Every copy this mystery rests on, each with its own key and its distance from the original.
Document2 steps from object
Cen, Yuan and Xue · publisher
Document3 steps from object
American Physical Society · publisher
Document3 steps from object
An et al. · publisher
Document1 step from object
Warren D. Rayle, NASA Lewis Research Center · Public domain (US government work)
Document2 steps from object
Sello, Viviani and Paganini · arXiv-nonexclusive