@article{BSMF_2018__146_1_1_0,
     author = {Hirano, Yuichi},
     title = {Congruences of modular forms and the {Iwasawa} $\lambda $-invariants},
     journal = {Bulletin de la Soci\'et\'e Math\'ematique de France},
     pages = {1--79},
     publisher = {Soci\'et\'e math\'ematique de France},
     volume = {146},
     number = {1},
     year = {2018},
     doi = {10.24033/bsmf.2752},
     mrnumber = {3864870},
     zbl = {1446.11076},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.24033/bsmf.2752/}
}