我对使用 LaTeX 和 Mendeley 还很陌生。我使用的是最新版本的 MacTeX 和 Mendeley 桌面版。我创建了一个 library.bib 文件（我选中了“为我的整个库创建 1 个 BibTeX 文件”选项，如下所示：
Automatically generated by Mendeley Desktop 1.17.13
Any changes to this file will be lost if it is regenerated by Mendeley.
BibTeX export options can be customized via Preferences -> BibTeX in Mendeley Desktop
@article{Lipson2017,
abstract = {Ancient DNA studies have established that European Neolithic populations were descended from Anatolian migrants who received a limited amount of admixture from resident hunter-gatherers. Many open questions remain, however, about the spatial and temporal dynamics of population interactions and admixture during the Neolithic period. Using the highest-resolution genome-wide ancient DNA data set assembled to date$\backslash$---|a total of 177 samples, 127 newly reported here, from the Neolithic and Chalcolithic of Hungary (6000-2900 BCE, n = 98), Germany (5500-3000 BCE, n = 42), and Spain (5500-2200 BCE, n = 37)$\backslash$---|we investigate the population dynamics of Neolithization across Europe. We find that genetic diversity was shaped predominantly by local processes, with varied sources and proportions of hunter-gatherer ancestry among the three regions and through time. Admixture between groups with different ancestry profiles was pervasive and resulted in observable population transformation across almost all cultural transitions. Our results shed new light on the ways that gene flow reshaped European populations throughout the Neolithic period and demonstrate the potential of time-series-based sampling and modeling approaches to elucidate multiple dimensions of historical population interactions.},
author = {Lipson, Mark and Sz{\'{e}}cs{\'{e}}nyi-Nagy, Anna and Mallick, Swapan and P{\'{o}}sa, Annam{\'{a}}ria and St{\'{e}}gm{\'{a}}r, Bal{\'{a}}zs and Keerl, Victoria and Rohland, Nadin and Stewardson, Kristin and Ferry, Matthew and Michel, Megan and Oppenheimer, Jonas and Broomandkhoshbacht, Nasreen and Harney, Eadaoin and Nordenfelt, Susanne and Llamas, Bastien and Mende, Bal{\'{a}}zs Guszt{\'{a}}v and K{\"{o}}hler, Kitti and Oross, Kriszti{\'{a}}n and Bond{\'{a}}r, M{\'{a}}ria and Marton, Tibor and Oszt{\'{a}}s, Anett and Jakucs, J{\'{a}}nos and Paluch, Tibor and Horv{\'{a}}th, Ferenc and Csengeri, Piroska and Ko{\'{o}}s, Judit and Sebok, Katalin and Anders, Alexandra and Raczky, P{\'{a}}l and Regenye, Judit and Barna, Judit P. and F{\'{a}}bi{\'{a}}n, Szilvia and Serlegi, G{\'{a}}bor and Toldi, Zolt{\'{a}}n and Nagy, Emese Gy{\"{o}}ngyv{\'{e}}r and Dani, J{\'{a}}nos and Moln{\'{a}}r, Erika and P{\'{a}}lfi, Gy{\"{o}}rgy and M{\'{a}}rk, L{\'{a}}szl{\'{o}} and Melegh, B{\'{e}}la and B{\'{a}}nfai, Zsolt and Fern{\'{a}}ndez-Eraso, Javier and Mujika-Alustiza, Jos{\'{e}} Antonio and Fern{\'{a}}ndez, Carmen Alonso and Echevarr{\'{i}}a, Javier Jim{\'{e}}nez and Bollongino, Ruth and Orschiedt, J{\"{o}}rg and Schierhold, Kerstin and Meller, Harald and Cooper, Alan and Burger, Joachim and B{\'{a}}nffy, Eszter and Alt, Kurt W. and Lalueza-Fox, Carles and Haak, Wolfgang and Reich, David},
doi = {10.1101/114488},
file = {:Users/zzzz/Documents/mendeley{\_}papers/Parallel palaeogenomic transects reveal complex genetic history of early European farmers.pdf:pdf},
issn = {0028-0836},
journal = {Nature},
pages = {114488},
publisher = {Nature Publishing Group},
title = {{Parallel ancient genomic transects reveal complex population history of early European farmers}},
url = {http://biorxiv.org/content/early/2017/03/06/114488},
year = {2017}
}
我的乳胶文件如下所示（为了简洁起见，删除了一些内容）：
\documentclass[11pt, oneside]{article} % use "amsart" instead of "article" for AMSLaTeX format
\usepackage{geometry} % See geometry.pdf to learn the layout options. There are lots.
\geometry{letterpaper} % ... or a4paper or a5paper or ...
%\geometry{landscape} % Activate for rotated page geometry
\usepackage[parfill]{parskip} % Activate to begin paragraphs with an empty line rather than an indent
\usepackage{graphicx} % Use pdf, png, jpg, or eps§ with pdflatex; use eps in DVI mode
% TeX will automatically convert eps --> pdf in pdflatex
\usepackage{amssymb}
\usepackage{amsmath}
\usepackage{mathtools}
\usepackage{subcaption}
%SetFonts
%SetFonts
\title{zzz}
\author{zzz}
\date{} % Activate to display a given date or no date
\begin{document}
\maketitle
\section{Abstract}
zzzzz \cite{Lipson2017}.
\bibliographystyle{IEEEtran}
\bibliography{/Users/zzzz/Documents/mendeley_papers/library.bib}
编译没问题，但引用只是文本中的一个问号。并且有一个错误：
LaTeX Warning: Citation `Lipson2017' on page 13 undefined on input line 183.
LaTeX Warning: There were undefined references.
我是不是做错了什么？我查看了所有其他帮助帖子，但没有一个能解决我的问题。
答案1
在调用参考书目文件的行中，
\bibliography{/Users/zzzz/Documents/mendeley_papers/library.bib}
您需要从路径末尾删除“.bib”。然后它应该可以工作！