@article{TRSPY_2002_236_a25,
     author = {S. A. Nazarov and A. S. Slutskij},
     title = {Arbitrary {Plane} {Systems} of {Anisotropic} {Beams}},
     journal = {Informatics and Automation},
     pages = {234--261},
     publisher = {mathdoc},
     volume = {236},
     year = {2002},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TRSPY_2002_236_a25/}
}