Voir la notice de l'article provenant de la source Czech Digital Mathematics Library
@article{KYB_1979__15_5_a0, author = {Kovanic, Pavel}, title = {On the pseudoinverse of a sum of symmetric matrices with applications to estimation}, journal = {Kybernetika}, pages = {--348}, publisher = {mathdoc}, volume = {15}, number = {5}, year = {1979}, mrnumber = {554017}, zbl = {0419.15004}, language = {en}, url = {http://geodesic.mathdoc.fr/item/KYB_1979__15_5_a0/} }
Kovanic, Pavel. On the pseudoinverse of a sum of symmetric matrices with applications to estimation. Kybernetika, Tome 15 (1979) no. 5, p. 348. http://geodesic.mathdoc.fr/item/KYB_1979__15_5_a0/