added some references

Author: thomasWeise

bookbase

@@ -1,7 +1,7 @@
 \hsection{The Distributed Version Control System git}%
 %
 Today, \git~\cite{S2023LG,T2024BGAGVCPMATFTND} is maybe the \pgls{VCS} with the most wide-spread use.
-It is the \pgls{VCS} on which \github~\cite{PRGWSUdVLFTEKPKFBV2016TSRFTAOGAG} is based, which, in turn, is maybe the most important hub for open source software projects in the world.
+It is the \pgls{VCS} on which \github~\cite{PRGWSUdVLFTEKPKFBV2016TSRFTAOGAG,GH2025RD,S2021GAGCC} is based, which, in turn, is maybe the most important hub for open source software projects in the world.
 \git\ is based on a \pgls{clientServerArchitecture}, where the \pgls{server} hosts and manages repositories of source code and other resources.
 The \git\ \pgls{client} is a command line application that is run in the \pgls{terminal} and which allows you to clone (i.e., download) source code repositories and upload (i.e., commit) changes to them.
 A repository is something like a directory with files and their editing history, i.e., you can work and improve source code, commit changes, and see the history of all past commits.

text/main/ecosystem/git/git.tex

@@ -10,7 +10,7 @@
 
 You can clone \git\ repositories with the command line \bashil{git} \pgls{client} program.
 However, \pycharm\ also has a \git \pgls{client} built in.
-We here outline both approaches.%
+We here outline both approaches based on the example of cloning a repository from \github~\cite{GH2025RDCAR}.%
 %
 \hinput{gitClonePycharm}{gitClonePycharm}%
 \hinput{gitCloneClient}{gitCloneClient}%

text/main/ecosystem/git/gitClone/gitClone.tex

@@ -278,7 +278,8 @@
 This form is often and commonly used.%
 %
 \item \url{ssh://[email protected]/user/repository} (or \url{ssh://[email protected]/user/repository.git}) use the \gls{SSH} to access the repository \textil{repository} of user \textil{user}. %
-I find this form more reliable when working with \github\ from China.%
+I find this form more reliable when working with \github\ from China. %
+However, it requires an \pgls{SSH} key to be configured for authentication~\cite{GH2025ADCTGWS}.%
 %
 \end{itemize}%
 %