diff --git a/book/contents/geo-engineering.md b/book/contents/geo-engineering.md
index b684d89..74a7bd4 100644
--- a/book/contents/geo-engineering.md
+++ b/book/contents/geo-engineering.md
@@ -29,7 +29,7 @@ The following topics on **geo-engineering** are considered prerequisite knowledg
 |Subject|Topic category / Learning objectives   |Open Educational Resources[^1]|Remarks |
 |:------|:-------------|:------------------|:---------------------------|
 |Foundations [CTB1410-20](https://studiegids.tudelft.nl/a101_displayCourse.do?course_id=58366)          | Shallow foundations; Bearing capacity and limit state.<details><summary>➤ Student can:</summary><br>- Make a well-founded assessment for the application of foundations <br>- Make a simple, static bearing capacity and settlement calculation for a foundation including determination of relevant parameters <br>- Be aware of the particularity of building on soft soil and the associated challenges</details>                                                                                                                                                                                                          |- [Strip footing](https://geo.verruijt.net/software/SoilMechBook2012.pdf)[^2]<br>- [Bearing capacity]( https://wp.kntu.ac.ir/fz_kalantary/Source/Soil%20Mech%20I/Craig's%20Soil%20Mechanics.pdf)[^7] <br>- [Shallow Foundation Centrifuge Test Tutorial (video)]( https://www.youtube.com/watch?v=x8AsXN1ZYH0&ab_channel=Geo-EngineeringTUDelft)[^12]                                  |- Soil Mechanics: Chapter 40 <br>- Craig's Soil Mechanics: Chapters 8.1 and 8.2 
-|                      | Prandtl; Brinch Hansen<details><summary>Students can:</summary><br>- Understand how the forces from a structure can be transferred to the subsoil via a foundation structure</details>                                                                                                                                                                                                         |- [Prandtl, limit theorems and Brinch Hansen](https://geo.verruijt.net/software/SoilMechBook2012.pdf)[^2]                                 |- Soil Mechanics: Chapters 41, 42 and 43             
+|                      | Prandtl; Brinch Hansen<details><summary>➤ Student can:</summary><br>- Understand how the forces from a structure can be transferred to the subsoil via a foundation structure</details>                                                                                                                                                                                                         |- [Prandtl, limit theorems and Brinch Hansen](https://geo.verruijt.net/software/SoilMechBook2012.pdf)[^2]                                 |- Soil Mechanics: Chapters 41, 42 and 43             
 |                        | Pile foundations; bearing capacity and deformation characteristics.<details><summary>➤ Student can:</summary><br>- Make a well-founded assessment for the application of foundations <br>- Calculate the bearing capacity and deformation of pile foundations according to the applicable standards <br>- Be aware of the particularity of building on soft soil and the associated challenges</details>                                                                                                                                                                                                                 |  [Pile foundations](https://geo.verruijt.net/software/SoilMechBook2012.pdf)[^2]                               |- Soil Mechanics: Chapter 49
 |                      | Design standards <details><summary>➤ Student can:</summary> <br>- Name the usual technical and functional requirements that must be set for a (foundation) construction and, for a simple construction, is able to formulate these requirements himself <br>- Choose the right foundation method <br>- Understand the safety philosophy in accordance with the Eurocode and is able to apply it correctly </details>                                                                                                                                                                             |                                 [Design standards](../Lec_pdfs/Quick_Reference_2014_foundations.pdf)[^11]|- Go through the different foundation types <br>- Pay close attention to the rules of thumb|
 |                      | Practical foundation design in collaboration with the structural engineer.<details><summary>➤ Student can:</summary> <br>-Understand the type of soil, the conditions for which the foundation is being designed and the correct foundation method.  </details>                                                                                                                                                                                |     [Pile foundation design](../Lec_pdfs/Pile_Foundations_Notes_2023.pdf)[^10]                            |- Go through chapter 2 for the types of piles and to know what case each one is used for <br>- Go through chapter 3 for the relavent calculations.