Geodesic
On algebraic threefolds whose hyperplane sections are Enriques surfaces
Sbornik. Mathematics, Tome 186 (1995) no. 9, pp. 1341-1352

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In this paper the following problem is solved: given a singular Fano variety $X$, find a smooth Enriques surface which is an ample Cartier divisor on $X$. The results obtained enable one to construct, using singular Fano varieties, examples of threefolds whose hyperplane sections are Enriques surfaces. They can be used in the classification of log-Fano varieties of (Fano) index 1. 
@article{SM_1995_186_9_a6,
     author = {Yu. G. Prokhorov},
     title = {On algebraic threefolds whose hyperplane sections are {Enriques} surfaces},
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     language = {en},
     url = {http://geodesic.mathdoc.fr/item/SM_1995_186_9_a6/}
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Yu. G. Prokhorov. On algebraic threefolds whose hyperplane sections are Enriques surfaces. Sbornik. Mathematics, Tome 186 (1995) no. 9, pp. 1341-1352. http://geodesic.mathdoc.fr/item/SM_1995_186_9_a6/