@article{JTNB_2019__31_2_503_0,
     author = {Catherine M. Hsu},
     title = {Higher congruences between newforms and {Eisenstein} series of squarefree level},
     journal = {Journal de th\'eorie des nombres de Bordeaux},
     pages = {503--525},
     publisher = {Soci\'et\'e Arithm\'etique de Bordeaux},
     volume = {31},
     number = {2},
     year = {2019},
     doi = {10.5802/jtnb.1092},
     language = {en},
     url = {https://jtnb.centre-mersenne.org/articles/10.5802/jtnb.1092/}
}