@article{10_4153_CJM_1992_002_2,
     author = {Barkwell, Lawrence and Lancaster, Peter and Markus, Alexander S.},
     title = {Gyroscopically {Stabilized} {Systems:} {A} {Class} {Of} {Quadratic} {Eigenvalue} {Problems} {With} {Real} {Spectrum}},
     journal = {Canadian journal of mathematics},
     pages = {42--53},
     year = {1991},
     volume = {44},
     number = {1},
     doi = {10.4153/CJM-1992-002-2},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/CJM-1992-002-2/}
}