@article{AMLG_1983__23_138008,
     author = {Gerhard J\"ager},
     title = {A well-ordering proof for {Feferman's} theory {To.}},
     journal = {Archiv f\"ur mathematische Logik und Grundlagenforschung},
     pages = {65--78},
     publisher = {mathdoc},
     volume = {23},
     year = {1983},
     zbl = {0511.03025},
     url = {http://geodesic.mathdoc.fr/item/AMLG_1983__23_138008/}
}