Voir la notice de l'article provenant de la source eLibrary of Mathematical Institute of the Serbian Academy of Sciences and Arts
@article{KJM_2010_33_1_a1, author = {Vladica Andreji\'c}, title = {Strong duality principle for four-dimensional {Osserman} manifolds}, journal = {Kragujevac Journal of Mathematics}, pages = {17 - 28}, publisher = {mathdoc}, volume = {33}, number = {1}, year = {2010}, url = {http://geodesic.mathdoc.fr/item/KJM_2010_33_1_a1/} }
Vladica Andrejić. Strong duality principle for four-dimensional Osserman manifolds. Kragujevac Journal of Mathematics, Tome 33 (2010) no. 1. http://geodesic.mathdoc.fr/item/KJM_2010_33_1_a1/