@article{JRAM_1985__356_152695,
     author = {G. Martens and H. Lange},
     title = {Normal generation and presentation of line bundles of low degree on curves.},
     journal = {Journal f\"ur die reine und angewandte Mathematik},
     pages = {1--18},
     publisher = {mathdoc},
     volume = {356},
     year = {1985},
     zbl = {0561.14009},
     url = {http://geodesic.mathdoc.fr/item/JRAM_1985__356_152695/}
}