@article{NUMA_1986__48_133077,
     author = {G. Alefeld},
     title = {Componentwise {Inclusion} and {Exclusion} {Sets} for {Solutions} of {Quadratic} {Equations} in {Finite} {Dimensional} {Spaces.}},
     journal = {Numerische Mathematik},
     pages = {391--416},
     publisher = {mathdoc},
     volume = {48},
     year = {1986},
     zbl = {0597.65050},
     url = {http://geodesic.mathdoc.fr/item/NUMA_1986__48_133077/}
}