@article{10_4153_CJM_1994_032_4,
     author = {Lancaster, P. and Rodman, L.},
     title = {Invariant {Neutral} {Subspaces} for {Symmetric} and {Skew} {Real} {Matrix} {Pairs}},
     journal = {Canadian journal of mathematics},
     pages = {602--618},
     year = {1994},
     volume = {46},
     number = {3},
     doi = {10.4153/CJM-1994-032-4},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/CJM-1994-032-4/}
}