@article{10_4064_ba62_1_2,
     author = {Arthur W. Apter},
     title = {Singular {Failures} of {GCH} and {Level} by {Level} {Equivalence}},
     journal = {Bulletin of the Polish Academy of Sciences. Mathematics},
     pages = {11--21},
     publisher = {mathdoc},
     volume = {62},
     number = {1},
     year = {2014},
     doi = {10.4064/ba62-1-2},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/ba62-1-2/}
}