@article{CM_1976__33_1_55_0,
     author = {Coray, Daniel F.},
     title = {Arithmetic on singular cubic surfaces},
     journal = {Compositio Mathematica},
     pages = {55--67},
     publisher = {Noordhoff International Publishing},
     volume = {33},
     number = {1},
     year = {1976},
     mrnumber = {432650},
     zbl = {0337.14028},
     language = {en},
     url = {http://www.numdam.org/item/CM_1976__33_1_55_0/}
}