@article{10_4064_aa_51_1_75_84,
     author = {Makoto Ishida},
     title = {Existence of an unramified cyclic extension and congruence conditions},
     journal = {Acta Arithmetica},
     pages = {75--84},
     publisher = {mathdoc},
     volume = {51},
     number = {1},
     year = {1988},
     doi = {10.4064/aa-51-1-75-84},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/aa-51-1-75-84/}
}