@article{ZNSL_2008_357_a11,
     author = {O. M. Fomenko},
     title = {On quadratic congruences},
     journal = {Zapiski Nauchnykh Seminarov POMI},
     pages = {195--200},
     publisher = {mathdoc},
     volume = {357},
     year = {2008},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZNSL_2008_357_a11/}
}