diff --git a/doc/handbook/dumux-handbook.bib b/doc/handbook/dumux-handbook.bib
index 230b313c3e53abe599ee93a216fb6274226db984..97e08e54d1a1a5de1fac84d467c393e61338bd7f 100644
--- a/doc/handbook/dumux-handbook.bib
+++ b/doc/handbook/dumux-handbook.bib
@@ -1069,7 +1069,7 @@ url = {http://www.sciencedirect.com/science/article/pii/S0169772204001160}
         and Steam)},
   title = {{Revised Release on the IAPWS Industrial Formulation 1997 for the
         Thermodynamic Properties of Water and Steam}},
-  howpublished = {\url{http://www.iapws.org/IF97-Rev.pdf}},
+  url={http://www.iapws.org/relguide/IF97-Rev.pdf},
   year = {1997}
 }
 
@@ -1358,12 +1358,11 @@ url={http://dx.doi.org/10.1007/s11242-015-0599-1}
   url={http://oai.dtic.mil/oai/oai?verb=getRecord&metadataPrefix=html&identifier=ADA044002}
 }
 
-@phdthesis{ebigbo2005,
+@mastersthesis{ebigbo2005,
   title={{Thermal effects of carbon dioxide sequestration in the subsurface}},
   author={Ebigbo, A.},
   year={2005},
-  school={Master’s thesis, Institut f{\"u}r Wasserbau, Universit{\"a}t Stuttgart},
-  url={https://www.hydrosys.uni-stuttgart.de/institut/hydrosys/publikationen/paper/Dipl_Anozie_Ebigbo.pdf}
+  school={Master’s thesis, Institut f{\"u}r Wasserbau, Universit{\"a}t Stuttgart}
 }
 
 @article{michaelides1981,