@article{MM2_1991__71_3_155625,
     author = {Gilvan Oliveira},
     title = {Weierstrass semigroups and the canonical ideal of non-trigonal curves.},
     journal = {Manuscripta mathematica},
     pages = {431--450},
     publisher = {mathdoc},
     volume = {71},
     number = {3},
     year = {1991},
     zbl = {0742.14029},
     url = {http://geodesic.mathdoc.fr/item/MM2_1991__71_3_155625/}
}