@article{IM2_2011_75_3_a4,
     author = {V. A. Krasnov},
     title = {Maximal intersections of three real quadrics},
     journal = {Izvestiya. Mathematics},
     pages = {569--587},
     year = {2011},
     volume = {75},
     number = {3},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/IM2_2011_75_3_a4/}
}