Cleanup `references.bib`.

diff --git a/doc/doxygen/references.bib b/doc/doxygen/references.bib
index 40ecf3f856ebbb04c2cd3b28d62b5d2214afeab8..d7f4cfe8162ee98bbb83aca15601f5d84f390455 100644 (file)
--- a/doc/doxygen/references.bib
+++ b/doc/doxygen/references.bib
@@ -317,8 +317,8 @@
 @phdthesis{fehling2020,
   author    = {M. Fehling},
   title     = {Algorithms for massively parallel generic \textit{hp}-adaptive finite element methods},
-  publisher = {Forschungszentrum Jülich GmbH Zentralbibliothek, Verlag},
-  school    = {Bergische Universität Wuppertal},
+  publisher = {Forschungszentrum J{\"u}lich GmbH Zentralbibliothek, Verlag},
+  school    = {Bergische Universit{\"a}t Wuppertal},
   year      = {2020},
   volume    = {43},
   pages     = {vii, 78 pp},
@@ -1479,19 +1479,24 @@
   volume  = {4},
   number  = {1},
   pages   = {7},
-%  doi     = {10.1186/s40323-017-0093-0},
+  doi     = {10.1186/s40323-017-0093-0},
   url     = {https://doi.org/10.1186/s40323-017-0093-0}
 }
 
 @article{clevenger_par_gmg,
-  Author                   = {T.C. Clevenger and T. Heister and G. Kanschat and M. Kronbichler},
-  Title                    = {A Flexible, Parallel, Adaptive Geometric Multigrid method for {FEM}},
-  Journal                  = {submitted},
-  Year                     = {2019},
-  Url                      = {https://arxiv.org/abs/1904.03317}
+  author = {T.C. Clevenger and T. Heister and G. Kanschat and M. Kronbichler},
+  title = {A Flexible, Parallel, Adaptive Geometric Multigrid Method for {FEM}},
+  year = {2021},
+  month = mar,
+  publisher = {Association for Computing Machinery ({ACM})},
+  volume = {47},
+  number = {1},
+  pages = {1--27},
+  journal = {{ACM} Transactions on Mathematical Software},
+  doi = {10.1145/3425193},
+  url = {https://doi.org/10.1145/3425193}
 }
 
-
 @book{CodeComplete,
   author =    {S. McConnell},
   title =     {Code Complete},
@@ -1618,22 +1623,27 @@
 }
 
 @inproceedings{ljungkvist2017matrix,
-  title={Matrix-free finite-element computations on graphics processors with adaptively refined unstructured meshes.},
-  author={Ljungkvist, Karl},
-  booktitle={SpringSim (HPC)},
-  pages={1--1},
-  year={2017}
+  title={Matrix-free finite-element computations on graphics processors with adaptively refined unstructured meshes},
+  author={K. Ljungkvist},
+  booktitle={Proceedings of the 25th High Performance Computing Symposium},
+  series={HPC '17},
+  articleno={1},
+  numpages={12},
+  year={2017},
+  url={https://dl.acm.org/doi/10.5555/3108096.3108097}
 }
 
 @article{kronbichler2019multigrid,
   title={Multigrid for matrix-free high-order finite element computations on graphics processors},
-  author={Kronbichler, Martin and Ljungkvist, Karl},
+  author={M. Kronbichler and K. Ljungkvist},
   journal={ACM Transactions on Parallel Computing (TOPC)},
   volume={6},
   number={1},
   pages={1--32},
   year={2019},
-  publisher={ACM New York, NY, USA}
+  publisher={ACM New York, NY, USA},
+  doi={10.1145/3322813},
+  url={https://doi.org/10.1145/3322813}
 }
 
 @article{Boffi2011,
@@ -1677,7 +1687,7 @@ url = {https://doi.org/10.1016/0045-7930(73)90027-3}
 }
 
 @MastersThesis{Battermann1996,
-  author    = {Battermann, Astrid},
+  author    = {A. Battermann},
   title     = {Preconditioning of Karush--Kuhn--Tucker Systems arising in Optimal Control Problems},
   school    = {Virginia Tech},
   year      = {1996},