Fix bibtex warnings.

diff --git a/9.4/paper.bib b/9.4/paper.bib
index cb2c6f0364c340f1c7594e2d0a2a2bf8e03cadb8..67f351f1fb380716001ddbe50578667ce19ed677 100644 (file)
--- a/9.4/paper.bib
+++ b/9.4/paper.bib
@@ -1303,7 +1303,7 @@ doi = {10.1504/IJCSE.2009.029164}
   publisher={ACM New York, NY, USA}
 }
 
-@article{munch2022gc,
+@misc{munch2022gc,
   title={Efficient distributed matrix-free multigrid methods on locally refined meshes for FEM computations},
   author= {Munch, Peter and Heister, Timo and Prieto Saavedra, Laura and Kronbichler, Martin},
   year= {2022},
@@ -1319,6 +1319,7 @@ doi = {10.1504/IJCSE.2009.029164}
   volume = 13289,
   pages = {133--152},
   year = {2022},
+  publisher = {Springer International Publishing},
   doi = {10.1007/978-3-031-07312-0_7}
 }