Secant spaces and Clifford's theorem
Compositio Mathematica, Tome 78 (1991) no. 2, pp. 193-212. 
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     title = {Secant spaces and {Clifford's} theorem},
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     number = {2},
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     mrnumber = {1104787},
     zbl = {0741.14035},
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     url = {http://www.numdam.org/item/CM_1991__78_2_193_0/}
}
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Coppens, Marc; Martens, Gerriet. Secant spaces and Clifford's theorem. Compositio Mathematica, Tome 78 (1991) no. 2, pp. 193-212. http://www.numdam.org/item/CM_1991__78_2_193_0/

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