@article{ETNA_2013__40__a21,
     author = {Kosti\'c,  Aleksandra and Voss,  Heinrich},
     title = {On {Sylvester's} law of inertia for nonlinear eigenvalue problems},
     journal = {Electronic transactions on numerical analysis},
     pages = {82--93},
     year = {2013},
     volume = {40},
     zbl = {1288.15012},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/ETNA_2013__40__a21/}
}