@article{MM2_1988__61_4_155313,
     author = {Karl-Otto St\"ohr and Paulo Viana},
     title = {A variant of {Petri's} analysis of the canonical ideal of an algebraic curve.},
     journal = {Manuscripta mathematica},
     pages = {223--248},
     publisher = {mathdoc},
     volume = {61},
     number = {4},
     year = {1988},
     zbl = {0661.14025},
     url = {http://geodesic.mathdoc.fr/item/MM2_1988__61_4_155313/}
}