Grzegorz Bancerek. Veblen Hierarchy. Formalized Mathematics, 19(2):83-92, 2011. [doi]
@article{Bancerek11,
title = {Veblen Hierarchy},
author = {Grzegorz Bancerek},
year = {2011},
doi = {10.2478/v10037-011-0014-5},
url = {http://dx.doi.org/10.2478/v10037-011-0014-5},
researchr = {https://researchr.org/publication/Bancerek11},
cites = {0},
citedby = {0},
journal = {Formalized Mathematics},
volume = {19},
number = {2},
pages = {83-92},
}