@article{IM2_2006_70_3_a3,
     author = {U. M. Pachev},
     title = {Representation of integers by isotropic ternary quadratic forms},
     journal = {Izvestiya. Mathematics },
     pages = {587--604},
     publisher = {mathdoc},
     volume = {70},
     number = {3},
     year = {2006},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/IM2_2006_70_3_a3/}
}