diff --git a/README.rst b/README.rst
index 4a7ce270a31670162a392376fc4d3c6c03809548..9038dbdc6d240edafcf26ffa1d8632dfb930b075 100644
--- a/README.rst
+++ b/README.rst
@@ -29,8 +29,7 @@ Result of the search for all search fields:
 **Mobile Robots**
 
 .. image:: resources/20230412_LiM2023_SUB_Information_MR_N.svg
-`The best evaluated technology in the search field Mobile Robots - RB-KAIROS+ MOBILE MANIPULATOR by Robotnik Automation S.L., © Robotnik Automation S.L.,
- <https://robotnik.eu/products/mobile-manipulators/rb-kairos/>`_ 
+`The best evaluated technology in the search field Mobile Robots - RB-KAIROS+ MOBILE MANIPULATOR by Robotnik Automation S.L., © Robotnik Automation S.L., <https://robotnik.eu/products/mobile-manipulators/rb-kairos/>`_ 
 
 **Fixed Robot Arms**
 
@@ -106,6 +105,10 @@ Güdel Group AG (2022) FP-5-HP: Beste Kombination aus grösstmöglichem Hub, hoh
 
 Halvorsen K (2015) MorpHex MKIII. http://zentasrobots.com/robot-projects/morphex-mkiii/. Accessed 8 May 2023
 
+Hicking J, Heimes P (2022) Technologiebewertung: Technologiebewertung aus wirtschaftlicher, technischer und praktischer Perspektive. In: Schuh G, Zeller V, Stich V (eds) Digitalisierungs- und Informationsmanagement: Handbuch Produktion und Management 9, 1st edn. Springer Berlin Heidelberg, Berlin, Heidelberg, pp 347–371
+
+Hicking J, Stroh M. (2022) Technologiefrüherkennung. In: Schuh G, Zeller V, Stich V (eds) Digitalisierungs- und Informationsmanagement: Handbuch Produktion und Management 9, 1st edn. Springer Berlin Heidelberg, Berlin, Heidelberg, pp 329–346
+
 IAAC Barcelona (2022) MINIBUILDERS: SMALL ROBOTS PRINTING LARGE-SCALE STRUCTURES. https://iaac.net/project/minibuilders/. Accessed 8 May 2023
 
 IAI Industrieroboter GmbH (2022) Matching cartesian robots 6-axis combinations. https://www.iai-automation.com/files/content/downloads/brochures/ICSB-ICSA_Part3_3-Axis-Gantry-4-6-Axis-System_eng.pdf#page=93. Accessed 15 May 2023