@article{10_1017_S0017089504002198,
     author = {KROPHOLLER, P. H. and RAJAEI, S. MOHSENI and SEGAL, J.},
     title = {INVARIANT {RINGS} {OF} {ORTHOGONAL} {GROUPS} {OVER} ${\mathbb F}_2$},
     journal = {Glasgow mathematical journal},
     pages = {7--54},
     year = {2005},
     volume = {47},
     number = {1},
     doi = {10.1017/S0017089504002198},
     url = {http://geodesic.mathdoc.fr/articles/10.1017/S0017089504002198/}
}