Template:Poincaré1916
From Manifold Atlas
H. Poincaré, Oeuvres. Tome II, Paris 1916 MR1401791 (97c:01053) Zbl 46.0004.01
H. Poincaré, Oeuvres. Tome II, Paris 1916 MR1401791 (97c:01053) Zbl 46.0004.01