Geodesic
Double space with double line
Sbornik. Mathematics, Tome 195 (2004) no. 10, pp. 1503-1544

Voir la notice de l'article provenant de la source Math-Net.Ru

For a singular double cover of $\mathbb P^3$ ramified in a sextic with double line, its birational maps into Fano 3-folds with canonical singularities, elliptic fibrations, and fibrations on surfaces of Kodaira dimension zero are described. 
@article{SM_2004_195_10_a4,
     author = {I. A. Cheltsov},
     title = {Double space with double line},
     journal = {Sbornik. Mathematics},
     pages = {1503--1544},
     publisher = {mathdoc},
     volume = {195},
     number = {10},
     year = {2004},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/SM_2004_195_10_a4/}
}
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I. A. Cheltsov. Double space with double line. Sbornik. Mathematics, Tome 195 (2004) no. 10, pp. 1503-1544. http://geodesic.mathdoc.fr/item/SM_2004_195_10_a4/