@article{MS2_1992__70_1_167198,
     author = {E. Ballico and R. Piene and H.-S. Tai},
     title = {A {Characterization} of {Balanced} {Rational} {Normal} {Surface} {Scrolls} in {Terms} of {Their} {Osculating} {Spaces} {II.}},
     journal = {Mathematica Scandinavica},
     pages = {204--206},
     publisher = {mathdoc},
     volume = {70},
     number = {1},
     year = {1992},
     zbl = {0778.14017},
     url = {http://geodesic.mathdoc.fr/item/MS2_1992__70_1_167198/}
}