@article{IM_1967__4_141881,
     author = {F. OORT and H. MATSUMURA},
     title = {Representability of {Group} {Functors,} and {Automorphisms} of {Algebraic} {Schemes.}},
     journal = {Inventiones mathematicae},
     pages = {1--25},
     year = {1967},
     volume = {4},
     zbl = {0173.22504},
     url = {http://geodesic.mathdoc.fr/item/IM_1967__4_141881/}
}