%&LaTeX
\documentclass{article}

\usepackage[utf8]{inputenc}
\usepackage[T1]{fontenc}
\usepackage{textcomp}

\begin{document}

\begin{thebibliography}{1}

\bibitem{Li_etal2019} {\textquotedblleft}\textit{New nanoporous graphyne monolayer as nodal line semimetal : double Dirac points with an ultrahigh Fermi velocity}{\textquotedblright}. Li L, Kong X, Peeters FM, Carbon \textbf{141}, 712 (2019).   http://doi.org/10.1016/J.CARBON.2018.09.078

\end{thebibliography}

\end{document}

