@article{NUMA_1971__17_132072,
     author = {N. GASTINEL},
     title = {Sur le calcul des produits de matrices.},
     journal = {Numerische Mathematik},
     pages = {222--229},
     year = {1971},
     volume = {17},
     zbl = {0227.65030},
     url = {http://geodesic.mathdoc.fr/item/NUMA_1971__17_132072/}
}