@article{SM_1998_189_7_a2,
     author = {M. M. Grinenko},
     title = {Birational automorphisms of a~three-dimensional double cone},
     journal = {Sbornik. Mathematics},
     pages = {991--1007},
     publisher = {mathdoc},
     volume = {189},
     number = {7},
     year = {1998},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/SM_1998_189_7_a2/}
}