diff --git a/README.md b/README.md
index 493696c..6fe559d 100644
--- a/README.md
+++ b/README.md
@@ -43,7 +43,7 @@ On the left handside you will find a plot window which shows the converted plots
 <figure role="group">
   <img src="./figures/dexpi2graph_gui.png" alt="dexpi2graph GUI" width=600>
   <figcaption>
-    Figure 2. GUI of the *DEXPI2graphML converter*.
+    Figure 2. GUI of the DEXPI2graphML converter.
   </figcaption>  
 </figure>
 
@@ -54,14 +54,13 @@ The folder *DEXPI_examples* containts two different DEXPI P&IDs:
 
 
 ## References:
-[1] DEXPI Initiative, DEXPI specification 1.3, https://dexpi.org/specifications/, accessed on 25.08.2021
-[2] NetworkX developers, online documentation, https://networkx.org/, accessed on 09.03.2022
-[3] Matplotlib development team, online documentation, https://matplotlib.org/, accessed on 09.03.2022
-[4] Pandas development team, online documentation, https://pandas.pydata.org/, accessed on 09.03.2022
-[5] NLTK project, online documentation, https://www.nltk.org/, accessed on 09.03.2022
-[6] Alex Clark and contributors, online documentation, https://pillow.readthedocs.io/en/stable/, accessed on 09.03.2022
-[7] PySimpleGUI, online documentation, https://pysimplegui.readthedocs.io/en/latest/, accessed on 09.03.2022
-[8] lxml development team, online documentation, https://lxml.de/, accessed on 09.03.2022
-
-[9] Oeing, J., Neuendorf, L.M., Bittorf, L., Krieger, W. and Kockmann, N. (2021), Flooding Prevention in Distillation and Extraction Columns with Aid of Machine Learning Approaches. Chem. Ing. Tech., 93: 1917-1929. https://doi.org/10.1002/cite.202100051
-[10] Baerns, M., Behr, A., Brehm, A., Gmehling, J., Hinrichsen, K.-O., Hofmann, H., & Onken, U., Palkovits, R., Renken, A. (2013). Technische Chemie. Wiley-VCH, Weinheim.
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+[1] DEXPI Initiative, DEXPI specification 1.3, https://dexpi.org/specifications/, accessed on 25.08.2021<br>
+[2] NetworkX developers, online documentation, https://networkx.org/, accessed on 09.03.2022<br>
+[3] Matplotlib development team, online documentation, https://matplotlib.org/, accessed on 09.03.2022<br>
+[4] Pandas development team, online documentation, https://pandas.pydata.org/, accessed on 09.03.2022<br>
+[5] NLTK project, online documentation, https://www.nltk.org/, accessed on 09.03.2022<br>
+[6] Alex Clark and contributors, online documentation, https://pillow.readthedocs.io/en/stable/, accessed on 09.03.2022<br>
+[7] PySimpleGUI, online documentation, https://pysimplegui.readthedocs.io/en/latest/, accessed on 09.03.2022<br>
+[8] lxml development team, online documentation, https://lxml.de/, accessed on 09.03.2022<br>
+[9] Oeing, J., Neuendorf, L.M., Bittorf, L., Krieger, W. and Kockmann, N. (2021), Flooding Prevention in Distillation and Extraction Columns with Aid of Machine Learning Approaches. Chem. Ing. Tech., 93: 1917-1929. https://doi.org/10.1002/cite.202100051<br>
+[10] Baerns, M., Behr, A., Brehm, A., Gmehling, J., Hinrichsen, K.-O., Hofmann, H., & Onken, U., Palkovits, R., Renken, A. (2013). Technische Chemie. Wiley-VCH, Weinheim.<br>
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