How can I add reference to a particular block inside a tikzpicture.
For example in my MWE below, I want to add a reference next to work "coil". I tried using \footfullcite{.} but it didn't work
MWE (Adding underbrace in tikz)
\documentclass{article}
\usepackage{tikz}
\usetikzlibrary{patterns,snakes}
\begin{document}
\begin{tikzpicture}
\tikzstyle{ground}=[fill,pattern=north east lines,draw=none,minimum width=0.3,minimum height=0.6]
\node (wall1) [ground, minimum height=2cm] {};
\draw (wall1.north east) -- (wall1.south east);
\node [draw,minimum width=0.5cm,minimum height=0.5cm] (mass) at (2,0) {m};
\node (fix) at (0,0) {};
\draw [
snake=coil,
segment amplitude=5pt,
segment length=5pt
] (wall1.east) -- (mass);
\draw [
thick,
decoration={
brace,
mirror,
raise=0.5cm
},
decorate
] (wall1.east) -- (mass)
node [pos=0.5,anchor=north,yshift=-0.55cm] {coil};
\end{tikzpicture}
\end{document}
