@article{ASNSP_1992_4_19_3_451_0,
     author = {Ottaviani, Giorgio},
     title = {On 3-folds in $\mathbb {P}^5$ which are scrolls},
     journal = {Annali della Scuola Normale Superiore di Pisa - Classe di Scienze},
     pages = {451--471},
     publisher = {Scuola normale superiore},
     volume = {Ser. 4, 19},
     number = {3},
     year = {1992},
     mrnumber = {1205407},
     zbl = {0786.14026},
     language = {en},
     url = {http://www.numdam.org/item/ASNSP_1992_4_19_3_451_0/}
}