@article{MM2_1980__33_251756,
     author = {Giuseppe Valla},
     title = {Correction and {Complements} to },
     journal = {Manuscripta mathematica},
     pages = {59--62},
     publisher = {mathdoc},
     volume = {33},
     year = {1980},
     zbl = {0471.13002},
     url = {http://geodesic.mathdoc.fr/item/MM2_1980__33_251756/}
}