Add BibTex citation format

doc/source/citation_acknowledgement.rst

@@ -1,7 +1,24 @@
-
 How to cite us
 ==============
 
 If you publish results generated using *ksrates*, please cite:
 
-Sensalari C., Maere S. and Lohaus R. (2021) *ksrates*: positioning whole-genome duplications relative to speciation events in *K*:sub:`S` distributions. *Bioinformatics*, Volume 38, Issue 2, January 2022, Pages 530–532, `doi: https://doi.org/10.1093/bioinformatics/btab602 <https://doi.org/10.1093/bioinformatics/btab602>`__
+Sensalari C., Maere S. and Lohaus R. (2021) *ksrates*: positioning whole-genome duplications relative to speciation events in *K*:sub:`S` distributions. *Bioinformatics*, Volume 38, Issue 2, January 2022, Pages 530–532, `doi: https://doi.org/10.1093/bioinformatics/btab602 <https://doi.org/10.1093/bioinformatics/btab602>`__
+
+BibTex format::
+
+    @article{sensalari2021ksrates,
+        author = {Sensalari, Cecilia and Maere, Steven and Lohaus, Rolf},
+        title = "{ksrates: positioning whole-genome duplications relative to speciation events in KS distributions}",
+        journal = {Bioinformatics},
+        volume = {38},
+        number = {2},
+        pages = {530-532},
+        year = {2021},
+        month = {08},
+        abstract = "{We present ksrates, a user-friendly command-line tool to position ancient whole-genome duplication events with respect to speciation events in a phylogeny by comparing paralog and ortholog KS distributions derived from genomic or transcriptomic sequences, while adjusting for substitution rate differences among the lineages involved.ksrates is implemented in Python 3 and as a Nextflow pipeline. The source code, Singularity and Docker containers, documentation and tutorial are available via https://github.com/VIB-PSB/ksrates.Supplementary data are available at Bioinformatics online.}",
+        issn = {1367-4803},
+        doi = {10.1093/bioinformatics/btab602},
+        url = {https://doi.org/10.1093/bioinformatics/btab602},
+        eprint = {https://academic.oup.com/bioinformatics/article-pdf/38/2/530/49006673/btab602\_supplementary\_data.pdf},
+    }