@article{ASENS_1971_4_4_2_181_0,
     author = {Mumford, David},
     title = {Theta characteristics of an algebraic curve},
     journal = {Annales scientifiques de l'\'Ecole Normale Sup\'erieure},
     pages = {181--192},
     publisher = {Elsevier},
     volume = {Ser. 4, 4},
     number = {2},
     year = {1971},
     doi = {10.24033/asens.1209},
     mrnumber = {45 #1918},
     zbl = {0216.05904},
     language = {en},
     url = {http://archive.numdam.org/articles/10.24033/asens.1209/}
}