[Tex/LaTex] How to remove the space between the last paragraph and the bibliography

spacing

This MWE

\documentclass[12pt]{article}

\begin{filecontents*}{citations.bib}
@article{hansen1982large,
  title={Large sample properties of generalized method of moments estimators},
  author={Hansen, Lars Peter},
  journal={Econometrica: Journal of the Econometric Society},
  pages={1029--1054},
  year={1982},
  publisher={JSTOR}
}

@article{tauchen1986finite,
  title={Finite state markov-chain approximations to univariate and vector autoregressions},
  author={Tauchen, George},
  journal={Economics letters},
  volume={20},
  number={2},
  pages={177--181},
  year={1986},
  publisher={Elsevier}
}
\end{filecontents*}

\usepackage{filecontents}
\usepackage{lipsum}
\usepackage{natbib}
\usepackage[compact]{titlesec}

\titlespacing{\section}{0pt}{*0.2}{*0.2}
\titleformat{\section} {\normalsize \bfseries} {\thesection}{1em}{}
\renewcommand \refname{}
\renewcommand\bibsection{\footnotesize}
\setlength{\bibsep}{0pt}

\begin{document}
\section{Introduction}
\lipsum[1]
\nocite{tauchen1986finite}
\section{Model}
\lipsum[2]
\nocite{hansen1982large}

\bibliographystyle{chicago}
\bibliography{citations}
\end{document}

produces output like this (some of which is snipped):

incorrect spacing

How do I change or remove the spacing between this last paragraph and the start of the bibliography? I'm preparing something with tight space constraints, so I'd like to shrink this to see if that saves me (maybe) one line at the end. (I can't touch the margins, font, or spacing between other lines)

Best Answer

It's rather on the inelegant side, but you can use \vspace with a negative value right above your \bibliography command to accomplish this:

\documentclass[12pt]{article}

\begin{filecontents*}{citations.bib}
@article{hansen1982large,
  title={Large sample properties of generalized method of moments estimators},
  author={Hansen, Lars Peter},
  journal={Econometrica: Journal of the Econometric Society},
  pages={1029--1054},
  year={1982},
  publisher={JSTOR}
}

@article{tauchen1986finite,
  title={Finite state markov-chain approximations to univariate and vector autoregressions},
  author={Tauchen, George},
  journal={Economics letters},
  volume={20},
  number={2},
  pages={177--181},
  year={1986},
  publisher={Elsevier}
}
\end{filecontents*}

\usepackage{filecontents}
\usepackage{lipsum}
\usepackage{natbib}
\usepackage[compact]{titlesec}

\titlespacing{\section}{0pt}{*0.2}{*0.2}
\titleformat{\section} {\normalsize \bfseries} {\thesection}{1em}{}
\renewcommand \refname{}
\renewcommand\bibsection{\footnotesize}
\setlength{\bibsep}{0pt}

\begin{document}
\section{Introduction}
\lipsum[1]
\nocite{tauchen1986finite}
\section{Model}
\lipsum[2]
\nocite{hansen1982large}

\bibliographystyle{chicago}
\vspace{-8pt}
\bibliography{citations}
\end{document}

example pic

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