@article{EXMATH_1986_1986_1_a18,
     author = {Beitia, Mar{\'\i}a Asunci\'on},
     title = {Matrices que conmutan con una matriz dada sobre un sub-espacio.},
     journal = {Extracta mathematicae},
     pages = {50-52},
     publisher = {mathdoc},
     volume = {1},
     number = {1},
     year = {1986},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/EXMATH_1986_1986_1_a18/}
}