@article{CRMATH_2013__351_15-16_623_0,
     author = {Jos\'e Carlos Sierra},
     title = {Surfaces in $ {\mathbb{P}}^{4}$ whose 4-secant lines do not sweep out a hypersurface},
     journal = {Comptes Rendus. Math\'ematique},
     pages = {623--625},
     publisher = {Elsevier},
     volume = {351},
     number = {15-16},
     year = {2013},
     doi = {10.1016/j.crma.2013.09.016},
     language = {en},
}