Correct mathematical typo

phd-thesis.bib

@@ -1945,3 +1945,28 @@
   url             = {https://doi.org/10.5281/zenodo.15254389},
   year            = 2025,
 }
+
+@article{de76_dynam_flexib_bodies,
+  author          = {De Veubeke, B Fraeijs},
+  title           = {The Dynamics of Flexible Bodies},
+  journal         = {International Journal of Engineering Science},
+  volume          = 14,
+  number          = 10,
+  pages           = {895--913},
+  year            = 1976,
+  publisher       = {Elsevier},
+}
+
+@article{cardona92_super_formul_mechan_analy,
+  author          = {A. Cardona and M. G{\'e}radin},
+  title           = {A Superelement Formulation for Mechanism Analysis},
+  journal         = {Computer Methods in Applied Mechanics and Engineering},
+  volume          = 100,
+  number          = 1,
+  pages           = {1-29},
+  year            = 1992,
+  doi             = {10.1016/0045-7825(92)90112-W},
+  url             =
+                  {https://www.sciencedirect.com/science/article/pii/004578259290112W},
+  issn            = {0045-7825},
+}