I need some help in order to fulfill the style requirements of my university. They require me to use this style of citation for my thesis. Unfortunately my skills in using BibLaTeX are quite limited... Could someone pleas explain me how to accomplish this task? Thanks in advance!
The citation style should look like the screenshot on the left, so the question is what changes have to be made in order to get:
a) the Citations in brackets, (not the citekeys)
b) those keys into the bibliography at the end
c) notes into the footnote, (e.g page)
Here the working Minimum Example
\documentclass[12pt,a4paper, openany]{scrbook}
\usepackage[natbib=true,sortcites=true,backend=biber,bibstyle=alphabetic,
citestyle=authoryear,sorting=nty]{biblatex}
\usepackage{xpatch}
\xpretobibmacro{title}{\begingroup\bfseries}{}{}
\xapptobibmacro{title}{\endgroup}{}
\ExecuteBibliographyOptions{%
\addbibresource{\jobname.bib}
\usepackage{filecontents}
\begin{filecontents}{\jobname.bib}
@book{key,
author = {Author, A.},
year = {2001},
title = {Title},
publisher = {Publisher},
}
\end{filecontents}
\begin{document}
blablablabla blablabla here comes a cite \cite{key} \\
blablabla blabla here's the \footcite{key}
\printbibliography
\end{document}

![The citation reads "[Sigfridsson und Ryde 1998]", the bibliography entry "[Sigfridsson und Ryde 1998] Sigfridsson, Emma und Ulf Ryde. „Comparison of methods for deriving atomic charges from the electrostatic potential and moments“. In: Journal of Computational Chemistry 19.4 (1998), S. 377–395. doi: 10.1002/(SICI)1096-987X(199803)19:4<377::AID-JCC1>3.0.CO;2-P."](../../images/f0303b8923cb105f8f35eff1b526711b.webp)
biblatexand itsauthoryearstyle? What exactly needs changing? You will find that many of the changes your style needs have been covered on this site. – moewe Feb 26 '18 at 13:10autocite=footnoteand then use\autocite. That will not give you the square brackets though, but really the square brackets look odd if there is only a citation in the footnote. – moewe Feb 26 '18 at 15:32