i'd like to customize the citation style for secondary citations. At the moment it looks like this:

but i want to look the citation like this:

Is there any chance to create a citation style which is doing this?
Here is an minimal example of the code i'm using including the customization for using 4 letters and the "-" for the cite.
\documentclass[fontsize=11pt, oneside, parskip=half+, numbers=noenddot]{scrreprt}
\usepackage[ngerman]{babel}
\usepackage[utf8]{inputenc}
\usepackage{filecontents}
\begin{filecontents}{Minimalbeispiel.bib}
@book{Bechte.1984,
author = {Bechte, Wolfgang},
year = {1984},
title = {{Steuerung der Durchlaufzeit durch belastungsorientierte Auftragsfreigabe bei Werkst{\"a}ttenfertigung. Diss. Univ. Hannover}},
address = {D{\"u}sseldorf},
volume = {2},
number ={70},
publisher = {VDI-Verlag},
series = {{Fortschritt-Berichte}}
}
@book{Wiendahl.2005,
author = {Wiendahl, Hans-Peter},
year = {2005},
title = {{Betriebsorganisation f{\"u}r Ingenieure}},
address = {M{\"u}nchen},
edition = {5. aktualisierte Aufl.},
publisher = {Hanser},
isbn = {3446228535}
}
\end{filecontents}
\usepackage[babel, german=quotes]{csquotes}
\usepackage[
backend=biber,
style=alphabetic,
pagetracker=true,
maxbibnames=99,
backref=false,
natbib=true,
firstinits=true,
sorting=nyt,
isbn=false,
url=false,
doi=false]{biblatex}
\AtBeginBibliography{%
\renewcommand*{\mkbibnamefamily}[1]{\textsc{#1}}
\renewcommand*{\labelnamepunct}{\addcolon\addspace}
}
\DeclareNameAlias{default}{last-first}
\DeclareLabelalphaTemplate{
\labelelement{
\field[final]{shorthand}
\field{label}
\field[strwidth=4,strside=left,ifnames=1]{labelname}
\field[strwidth=2,strside=left,ifnames=2]{labelname}
\field[strwidth=1,strside=left]{labelname}
}
\labelelement{
\literal{-}
}
\labelelement{
\field[strwidth=2,strside=right]{year}
}
}
\renewcommand*{\labelalphaothers}{}
\addbibresource{Minimalbeispiel.bib}
\begin{document}
Interesting stuff. \cite{Bechte.1984} quoted in \cite[S. 266f.]{Wiendahl.2005}
\par
Interesting stuff. [Bech-84 quoted in Wien-05, S. 266f.]
\printbibliography
\end{document}
biblatexas well. (Of course one might get into trouble with the square brackets here ...) – moewe Sep 12 '16 at 06:53