@article{10_1017_S0017089500005127,
     author = {Bruce, J. W.},
     title = {A {Zeuthen} {Segre} formula for even dimensional submanifolds of real projective space},
     journal = {Glasgow mathematical journal},
     pages = {97--99},
     year = {1983},
     volume = {24},
     number = {1},
     doi = {10.1017/S0017089500005127},
     url = {http://geodesic.mathdoc.fr/articles/10.1017/S0017089500005127/}
}