A note on Enriques' surfaces in characteristic 2
Compositio Mathematica, Volume 47 (1982) no. 2, p. 207-216
@article{CM_1982__47_2_207_0,
     author = {Katsura, Toshiyuki},
     title = {A note on Enriques' surfaces in characteristic 2},
     journal = {Compositio Mathematica},
     publisher = {Martinus Nijhoff Publishers},
     volume = {47},
     number = {2},
     year = {1982},
     pages = {207-216},
     zbl = {0505.14027},
     mrnumber = {677021},
     language = {en},
     url = {http://www.numdam.org/item/CM_1982__47_2_207_0}
}
Katsura, Toshiyuki. A note on Enriques' surfaces in characteristic 2. Compositio Mathematica, Volume 47 (1982) no. 2, pp. 207-216. http://www.numdam.org/item/CM_1982__47_2_207_0/

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