@article{ZNSL_1997_246_a4,
     author = {S. E. Kozlov},
     title = {Geometry of the real {Grassmannian} manifolds. {Parts~I,~II}},
     journal = {Zapiski Nauchnykh Seminarov POMI},
     pages = {84--107},
     publisher = {mathdoc},
     volume = {246},
     year = {1997},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZNSL_1997_246_a4/}
}