@article{CM_1971__23_3_265_0,
     author = {Oort, Frans},
     title = {Finite group schemes, local moduli for abelian varieties, and lifting problems},
     journal = {Compositio Mathematica},
     pages = {265--296},
     publisher = {Wolters-Noordhoff Publishing},
     volume = {23},
     number = {3},
     year = {1971},
     mrnumber = {301026},
     zbl = {0223.14024},
     language = {en},
     url = {http://www.numdam.org/item/CM_1971__23_3_265_0/}
}