@article{ZNSL_2014_428_a4,
     author = {B. R. Bakhadly and A. E. Guterman and O. V. Markova},
     title = {Graphs defined by orthogonality},
     journal = {Zapiski Nauchnykh Seminarov POMI},
     pages = {49--80},
     year = {2014},
     volume = {428},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZNSL_2014_428_a4/}
}