Circles and spheres in pseudo-Riemannian geometry.
Abe, N. ; Nakanishi, Y. ; Yamagushi, S.
Aequationes mathematicae, Tome 40 (1990), p. 134-145 / Harvested from Göttinger Digitalisierungszentrum
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Publié le : 1990-01-01
EUDML-ID : urn:eudml:doc:137345 
@article{GDZPPN002038072,
     title = {Circles and spheres in pseudo-Riemannian geometry.},
     journal = {Aequationes mathematicae},
     volume = {40},
     year = {1990},
     pages = {134-145},
     zbl = {0705.53026},
     url = {http://dml.mathdoc.fr/item/GDZPPN002038072}
}

Abe, N.; Nakanishi, Y.; Yamagushi, S. Circles and spheres in pseudo-Riemannian geometry.. Aequationes mathematicae, Tome 40 (1990) pp. 134-145. http://gdmltest.u-ga.fr/item/GDZPPN002038072/