Geodesic
Topological invariants of homogeneous spaces
Matematičeskie zametki, Tome 12 (1972) no. 6, pp. 761-768 
A. L. Onishchik. Topological invariants of homogeneous spaces. Matematičeskie zametki, Tome 12 (1972) no. 6, pp. 761-768. http://geodesic.mathdoc.fr/item/MZM_1972_12_6_a13/
@article{MZM_1972_12_6_a13,
     author = {A. L. Onishchik},
     title = {Topological invariants of homogeneous spaces},
     journal = {Matemati\v{c}eskie zametki},
     pages = {761--768},
     year = {1972},
     volume = {12},
     number = {6},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_1972_12_6_a13/}
}
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Voir la notice de l'article provenant de la source Math-Net.Ru

We prove the topological invariance of the defect of a homogeneous space, which was recently introduced by Baum. We establish a relation between the defect and other invariants.