@article{ZNSL_2009_373_a6,
     author = {V. Gerdt and Yu. Palii and A. Khvedelidze},
     title = {On the ring of local invariants for a~pair of the entangled $q$-bits},
     journal = {Zapiski Nauchnykh Seminarov POMI},
     pages = {104--123},
     publisher = {mathdoc},
     volume = {373},
     year = {2009},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZNSL_2009_373_a6/}
}