If I use the IEEEtran bibstyle with the default Bibtex
\bibliographystyle{IEEEtran}
the bib entry below gets listed in the references section without author name.
@Article{simon_comments_1952,
Title = {Comments on the Theory of Organizations},
Author = {Simon, Herbert A},
Journal = {The American Political Science Review},
Year = {1952},
Number = {4},
Pages = {pp. 1130-1139},
Volume = {46},
ISSN = {00030554},
Publisher = {American Political Science Association}
}
where this one shows just fine:
@Article{simon_architecture_1962,
Title = {The architecture of complexity},
Author = {Simon, Herbert A},
Journal = {Proceedings of the American philosophical society},
Year = {1962},
Number = {6},
Pages = {467--482},
Volume = {106},
Category = {hierarchy},
Doi = {10.2307/985254},
}
Here is a screenshot

Any idea why? They look exactly the same in terms of syntax. If I am not missing something, it looks kind of random to me.
Ps, the solution here is not applicable (I could not find the style file being referenced).
IEEEtranbibliography style is programmed to replace repeated author names with two consecutive em-dashes. This is a very common bibliographic formatting convention. – Mico Apr 10 '15 at 15:34