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README.md

@@ -108,7 +108,7 @@ Telegrafenberg
 14473 Potsdam, Germany
 
 ## References
-`CORBAM` uses `numpy`, `scipy`, `pandas`, `matplotlib`, `cartopy`, `dlib`, `numdifftools` and `FieldTools`:
+`CORBAM` uses `numpy`, `scipy`, `pandas`, `matplotlib`, `cartopy`, `dlib` and `FieldTools`:
 
 [\[scipy\]](https://www.scipy.org/) Pauli Virtanen, Ralf Gommers, Travis E. Oliphant, Matt Haberland,  
 Tyler Reddy, David Cournapeau, Evgeni Burovski, Pearu Peterson,   
@@ -136,5 +136,5 @@ Computing in Science & Engineering, vol. 9, no. 3, pp. 90-95
 [\[dlib\]](http://dlib.net/) King, D.E. (2009)  
 "Dlib-ml:  A machine learning toolkit"
 
-[\[FieldTools\]](https://doi.org/10.5880/fidgeo.2019.033) Matuschek, Hannes; Mauerberger, Stefan (2019)
+[\[FieldTools\]](https://doi.org/10.5880/fidgeo.2019.033) Matuschek, Hannes; Mauerberger, Stefan (2019)  
 "FieldTools: Toolbox for manipulating vector fields on the sphere."
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