expérience d'Eötvös

[1989] Actually, Eötvös did publish his results in 1910, it's just that no one knows about it... ; Michael Martin Nieto ; Richard J. Hughes ; T. Goldman ; American Journal of Physics 57 (mai 1989) p. 397 [lien]
[1999] [Search and Discovery] Gravitational Self-Energy and the Equivalence Principle ; Bertram Schwarzchild ; Physics Today 52 (oct 1999) p. 19 [lien]