@article{ZNSL_2021_499_a5,
     author = {V. N. Malozemov and G. Sh. Tamasyan},
     title = {Factorization of the projection matrix onto a subspace},
     journal = {Zapiski Nauchnykh Seminarov POMI},
     pages = {67--76},
     year = {2021},
     volume = {499},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZNSL_2021_499_a5/}
}