@article{CM_1987__62_2_107_0,
     author = {Katsura, Toshiyuki and Oort, Frans},
     title = {Families of supersingular abelian surfaces},
     journal = {Compositio Mathematica},
     pages = {107--167},
     publisher = {Martinus Nijhoff Publishers},
     volume = {62},
     number = {2},
     year = {1987},
     mrnumber = {898731},
     zbl = {0636.14017},
     language = {en},
     url = {http://www.numdam.org/item/CM_1987__62_2_107_0/}
}