Styleguide.md

-In the following, we list all different types of file templates and their usage.
+In the following, we list all different types of file templates and their usage. 
 
 # Directives
 
@@ -10,6 +10,7 @@ Each file makes use of the following directives
 ![image](uploads/ed1c5e8b1a0a007273d632f03b9afc3f/image.png)
 * `### Colaborators (External)`: for specifying further collaborators that are not institute members
 
+The directives for including BibTeX references are explained at the end of this page.
 
 # Template (full) Topic
 
@@ -70,4 +71,57 @@ Delete the Working Groups directive.
 
 ...
 
-```
\ No newline at end of file
+```
+
+# References
+
+## Plain Text
+
+## BibTeX
+
+Provide a [BibTeX](https://www.ctan.org/pkg/bibtex)-file in the folder `topics/bib`
+
+Use the following directives in the header of the corresponding Markdown file:
+
+```
+---
+bibliography: bib/my-bibtex-file.bib
+---
+```
+
+By default, this uses the sytling ...
+
+If you want to provide another styling, provide a csl file in `/topics/csl` and add use the following directives in the header of the Markdown file corresponding to the topic:
+
+```
+---
+bibliography: bib/aperiodSchr.bib
+csl : csl/din-1505-2-alphanumeric.csl
+---
+```
+
+If your BibTeX file contains the reference 
+```bibtex
+@misc{gggu2021,
+      title={Finite section method for aperiodic Schr\"odinger operators}, 
+      author={Fabian Gabel and Dennis Gallaun and Julian Großmann and Riko Ukena},
+      year={2021},
+      eprint={2104.00711},
+      archivePrefix={arXiv},
+      primaryClass={math.SP}
+}
+```
+
+in order to cite this reference, use the syntax 
+
+```
+[@gggu2021]
+```
+
+in order to get the following result:
+
+![image](uploads/c40e7c0be73dad9b00763234628741b7/image.png)
+
+and the corresponding entry in the References section
+
+![image](uploads/b66a1edc61eecd29502cfb9a8033190f/image.png)
\ No newline at end of file