@article{ZNSL_2005_329_a11,
     author = {M. Yu. Nikanorova},
     title = {Canonical representation of tangent vectors of {Grassmannians}},
     journal = {Zapiski Nauchnykh Seminarov POMI},
     pages = {147--158},
     year = {2005},
     volume = {329},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZNSL_2005_329_a11/}
}