Citing mathoverflow answers using \bibitem(without using bibtex) - latex

Question

Is there a way to cite mathoverflow answers using the following :
\begin{thebibliography}
\bibitem ....the mathoverflow citation
\end{thebibliography}
I did the following :
\documentclass[11pt]{amsart}
\setlength{\textheight}{23cm}
\setlength{\textwidth}{16cm}
\setlength{\topmargin}{-0.8cm}
\setlength{\parskip}{0.3\baselineskip}
\hoffset=-1.4cm
\usepackage{pifont}
\usepackage{amsmath,amscd,amssymb}
\usepackage{hyperref}
\newtheorem{theorem}{Theorem}[section]
\newtheorem{conjecture}[subsection]{Conjecture}
\newtheorem{lemma}[theorem]{Lemma}
\newtheorem{proposition}[theorem]{Proposition}
\newtheorem{remark}[theorem]{Remark}
\numberwithin{equation}{section}
\newtheorem{definition}[theorem]{Definition}
\newtheorem{example}[theorem]{Example}
\newtheorem{corollary}[theorem]{Corollary}
\renewcommand{\thefootnote}{\arabic{footnote}}
\input xy
\xyoption{all}
\begin{document}
some text \cite{MO1}
\begin{thebibliography}{1}
\bibitem{MO1} gowers (\url{https://mathoverflow.net/users/1459/gowers}), Examples of common false beliefs in mathematics, URL (version: 2020-09-03): \url{https://mathoverflow.net/q/23478}
\end{thebibliography}
\end{document}
I know that there are ways to do it using bibtex and creating a separate .bib file. But I was thinking whether we could do it just using \bibitem?
Any help from anyone is welcome.

Answer 1

You could copy the rendered citation from the top of the cite popup:
With some tiny modifications, like wrapping the urls into suitable macros, you can directly use this in your bibliography:
\documentclass{article}
\usepackage{hyperref}
\begin{document}
\begin{thebibliography}{1}
\bibitem{gowers} gowers (\url{https://mathoverflow.net/users/1459/gowers}), Examples of common false beliefs in mathematics, URL (version: 2020-09-03): \url{https://mathoverflow.net/q/23478}
\end{thebibliography}
\end{document}