@article{10_4064_cm_38_2_173_174,
     author = {Nigel J. Cutland},
     title = {On the form of countable admissible ordinals},
     journal = {Colloquium Mathematicum},
     pages = {173--174},
     publisher = {mathdoc},
     volume = {38},
     number = {2},
     year = {1977},
     doi = {10.4064/cm-38-2-173-174},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/cm-38-2-173-174/}
}