\providecommand{\bysame}{\leavevmode\hbox to3em{\hrulefill}\thinspace}
\providecommand{\MR}{\relax\ifhmode\unskip\space\fi MR }
% \MRhref is called by the amsart/book/proc definition of \MR.
\providecommand{\MRhref}[2]{%
  \href{http://www.ams.org/mathscinet-getitem?mr=#1}{#2}
}
\providecommand{\href}[2]{#2}
\begin{thebibliography}{Ogu01}

\bibitem[GD64]{EGA_IV}
Alexander Grothendieck and Jean Dieudonn\'e, \emph{\'el\'ements de
  g\'eom\'etrie alg\'ebrique iv}, Inst. Hautes \'Etudes Sci. Publ. Math., 1964.

\bibitem[Kat89]{KKato}
Kazuya Kato, \emph{Logarithmic structures of fontaine-illusie, in:algebraic
  analysis, geometry, and number theory\textit{(Baltimore,MD,1988)}}, Johns
  Hopkins Univ.Press, Baltimore, MD (1989), 191--224.

\bibitem[Kat94]{ToricSing}
\bysame, \emph{Toric singularities}, American Journal of Mathematics
  \textbf{116} (1994), no.~5, 1073--1099.

\bibitem[Ogu01]{Ogus}
Arthur Ogus, \emph{Lectures on logarithmic algebraic geometry}, TeXed notes,
  2001.

\bibitem[Ols05]{LogCot}
Martin~C. Olsson, \emph{The logarithmic cotangent complex}, Math. Ann.
  \textbf{333} (2005), 859--931.

\end{thebibliography}