@article{FPM_2008_14_4_a8,
     author = {A. A. Kozlov and V. A. Nosov and A. E. Pankratiev},
     title = {Matrices and graphs of essential dependence of proper families of functions},
     journal = {Fundamentalʹna\^a i prikladna\^a matematika},
     pages = {137--149},
     publisher = {mathdoc},
     volume = {14},
     number = {4},
     year = {2008},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/FPM_2008_14_4_a8/}
}