@article{TMF_2008_155_3_a5,
     author = {M. Saniga and M. Planat and P. Pracna},
     title = {Projective ring line encompassing two-qubits},
     journal = {Teoreti\v{c}eska\^a i matemati\v{c}eska\^a fizika},
     pages = {463--473},
     publisher = {mathdoc},
     volume = {155},
     number = {3},
     year = {2008},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TMF_2008_155_3_a5/}
}