[Tex/LaTex] biblatex custom reference

biblatex

I've been searching for a way to create "Custom References" with biblatex, but haven't found a solution to my problem. Among "normal sources" like Journal Articles, I need other references where I can put a custom sentence in it. Like "[3] This was performed by someone else".

Is there an option to do that?

 \documentclass{scrreprt}
\usepackage[refsection=chapter,style=chem-angew]{biblatex}
\usepackage[english]{babel}
\usepackage[T1]{fontenc}
\usepackage[ansinew]{inputenc}
\begin{filecontents}{biblio.bib}

@article{entry1, 
    author = "George D. Greenwade",
    title = "The {C}omprehensive {T}ex {A}rchive {N}etwork ({CTAN})",
    year = "1993",
    journal = "TUGBoat",
    volume = "14",
    number = "3",
    pages = "342--351",
           url=" www.ctan.org"
}

\end{filecontents}

\addbibresource{biblio.bib}

\begin{document}
\chapter{Test Chapter One}
\cite{entry1}
So far so good, now I need another reference that says 'This was performed by someone else'.
\printbibliography[heading=subbibliography]

\end{document}

Best Answer

The notes2bib seems to be what you are after, it provides a \bibnote command that places a note in the bibliography.

MWE

\documentclass{article}
\usepackage[style=numeric,backend=biber,sorting=none]{biblatex} 
\usepackage{notes2bib}
\addbibresource{biblatex-examples.bib}

\begin{document}
We cite something \cite{aksin} and now a note \bibnote{just a note}.

\printbibliography
\end{document}

enter image description here

As a matter of fact biblatex's notes2bib support seems to do something similar to what greyshade did in their answer.