BibTeX: |
@article{Perfect-Number-Thm-AFP,
author = {Mark Ijbema},
title = {Perfect Number Theorem},
journal = {Archive of Formal Proofs},
month = nov,
year = 2009,
note = {\url{http://isa-afp.org/entries/Perfect-Number-Thm.html},
Formal proof development},
ISSN = {2150-914x},
}
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