@article{10_4171_dm_146,
     author = {William Stein and Brian Conrad and Bas Edixhoven},
     title = {$J_1(p)$ has connected fibers},
     journal = {Documenta mathematica},
     pages = {331--408},
     year = {2003},
     volume = {8},
     doi = {10.4171/dm/146},
     url = {http://geodesic.mathdoc.fr/articles/10.4171/dm/146/}
}