diff --git a/crossref.bib b/crossref.bib
index ae21b00..a4b21fb 100644
--- a/crossref.bib
+++ b/crossref.bib
@@ -10,9 +10,9 @@
 @Proceedings{aaai1991,
   title =        "Proceedings of the Ninth National Conference on
                   Artificial Intelligence ({AAAI} 1991)",
-  booktitle =    "Proceedings of the Eleventh National Conference on
+  booktitle =    "Proceedings of the Ninth National Conference on
                   Artificial Intelligence ({AAAI} 1991)",
-  publisher =    "{AAAI} Press/{MIT} Press",
+  publisher =    "{AAAI} Press",
   year =         "1991"
 }
 
diff --git a/literatur.bib b/literatur.bib
index 5c93d3b..fc2f113 100644
--- a/literatur.bib
+++ b/literatur.bib
@@ -2676,7 +2676,7 @@ @Proceedings{celorrio-et-al-2011
 }
 
 @InProceedings{celorrio-et-al-icaps2013wspal,
-  author =       "Sergio Jim{\'{e}}nez Celorrio and Patrik Haslum and Sylvie Thi{\'e}baux",
+  author =       "Sergio {Jim{\'e}nez Celorrio} and Patrik Haslum and Sylvie Thi{\'e}baux",
   title =        "Pruning bad quality causal links in sequential satisfying planning",
   crossref =     "icaps2013wspal",
   pages =        "45--52"
@@ -12518,7 +12518,7 @@ @Misc{olmo-et-al-arxiv2021
 
 @InProceedings{olz-bercher-icaps2019,
   author =       "Conny Olz and Pascal Bercher",
-  title =        "Eliminating Redundant Actions in Partially Ordered Plans --- A Complexity Analysis",
+  title =        "Eliminating Redundant Actions in Partially Ordered Plans -- A Complexity Analysis",
   crossref =     "icaps2019",
   pages =        "310--319"
 }