Algebraic realization of p-adically projective groups
Compositio Mathematica, Tome 79 (1991) no. 1, pp. 21-62. 
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     number = {1},
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     mrnumber = {1112279},
     zbl = {0737.12005},
     language = {en},
     url = {http://archive.numdam.org/item/CM_1991__79_1_21_0/}
}
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Jarden, Moshe. Algebraic realization of $p$-adically projective groups. Compositio Mathematica, Tome 79 (1991) no. 1, pp. 21-62. http://archive.numdam.org/item/CM_1991__79_1_21_0/

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