@article{GDZPPN00210900X,
title = {A short topological proof for the symmetry of 2 point homogeneous spaces.},
journal = {Inventiones mathematicae},
volume = {104},
year = {1991},
pages = {61-64},
zbl = {0756.53024},
url = {http://dml.mathdoc.fr/item/GDZPPN00210900X}
}
Szabó, Z.I. A short topological proof for the symmetry of 2 point homogeneous spaces.. Inventiones mathematicae, Tome 104 (1991) pp. 61-64. http://gdmltest.u-ga.fr/item/GDZPPN00210900X/