@article{NUMA_1990__57_6-7_133456,
     author = {Rainer Garus and Tassilo K\"upper},
     title = {Computation of the {Smallest} {Positive} {Eigenvalue} of a {Quadratic} ..-matrix.},
     journal = {Numerische Mathematik},
     pages = {393--404},
     publisher = {mathdoc},
     volume = {57},
     number = {6-7},
     year = {1990},
     zbl = {0675.65028},
     url = {http://geodesic.mathdoc.fr/item/NUMA_1990__57_6-7_133456/}
}