@article{ZNSL_1999_265_a2,
     author = {M. V. Bondarko},
     title = {Idempotents in the endomorphism ring of an ideal in a $p$-extension of a complete discrete valuation field with residue field of characteristic~$p$ as a {Galois} module},
     journal = {Zapiski Nauchnykh Seminarov POMI},
     pages = {22--28},
     publisher = {mathdoc},
     volume = {265},
     year = {1999},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZNSL_1999_265_a2/}
}