diff --git a/paper/ref.bib b/paper/ref.bib
index 6a035cb..905696d 100644
--- a/paper/ref.bib
+++ b/paper/ref.bib
@@ -63,7 +63,6 @@ @inproceedings{meligrana2026weighted
 year = {2026},
 publisher = {Association for Computing Machinery},
 address = {New York, NY, USA},
-doi = {10.1145/3774904.3792966},
 booktitle = {Proceedings of the ACM on Web Conference 2026},
 note={Accepted for publication. Currently available as arXiv preprint arXiv:2403.20256}
 }
@@ -211,7 +210,7 @@ @InProceedings{lee2010stratified
 publisher="Springer Berlin Heidelberg",
 pages="621--639",
 isbn="978-3-642-13818-8",
-doi="10.1007/978-3-642-13818-8\_42",
+doi="10.1007/978-3-642-13818-8",
 }
 
 @article{braverman2012optimal,