@article{IM_1972__16_142144,
     author = {John J. Benedetto},
     title = {A {Support} {Preserving} {Hahn-Banach} {Property} to {Determine} {Helson-S} {Sets.}},
     journal = {Inventiones mathematicae},
     pages = {214--228},
     publisher = {mathdoc},
     volume = {16},
     year = {1972},
     zbl = {0239.43008},
     url = {http://geodesic.mathdoc.fr/item/IM_1972__16_142144/}
}