@article{ZNSL_2010_383_a2,
     author = {E. P. Golubeva},
     title = {On the negative {Pell} equation},
     journal = {Zapiski Nauchnykh Seminarov POMI},
     pages = {53--62},
     publisher = {mathdoc},
     volume = {383},
     year = {2010},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZNSL_2010_383_a2/}
}