@article{DAS_2018_a6,
     author = {T. D. Browning and D. R. Heath-Brown},
     title = {Counting rational points on quadric surfaces},
     journal = {Discrete analysis},
     year = {2018},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/DAS_2018_a6/}
}