@article{10_4064_fm_84_1_5_34,
     author = {W. Reinhardt},
     title = {Set existence principles of {Shoenfield,} {Ackermann,} and {Powell}},
     journal = {Fundamenta Mathematicae},
     pages = {5--34},
     publisher = {mathdoc},
     volume = {84},
     number = {1},
     year = {1974},
     doi = {10.4064/fm-84-1-5-34},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/fm-84-1-5-34/}
}