@article{IM2_1984_22_1_a4,
     author = {V. V. Nikulin},
     title = {Involutions of integral quadratic forms and their applications to real algebraic geometry},
     journal = {Izvestiya. Mathematics},
     pages = {99--172},
     year = {1984},
     volume = {22},
     number = {1},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/IM2_1984_22_1_a4/}
}