@article{RCM_2006_40_1_a1,
     author = {Shahla Ahdout and Sheldon Rothman},
     title = {Reduction to normal form of a self-adjoint linear transformation with respect to a pseudo-unitary or a pseudo-euclidean inner product},
     journal = {Revista colombiana de matematicas},
     pages = {15--29},
     publisher = {mathdoc},
     volume = {40},
     number = {1},
     year = {2006},
     url = {http://geodesic.mathdoc.fr/item/RCM_2006_40_1_a1/}
}