diff --git a/work/bibliography.bib b/work/bibliography.bib
index f81085e..9e664d4 100644
--- a/work/bibliography.bib
+++ b/work/bibliography.bib
@@ -2,14 +2,14 @@ own:
 
 @inproceedings{TypeAssisted2002,
   author = {Lhee, Kyung-suk and Chapin, Steve J.},
-  booktitle = {11th USENIX Security Symposium},
+  booktitle = {11\textsuperscript{th} USENIX Security Symposium},
   title = {{Type-Assisted Dynamic Buffer Overflow Detection}},
   year = {2002}
 }
 
 @inproceedings{Rad2001,
 author = {Chiueh, Tzi-cker and Hsu, Fu-Hau},
-booktitle = {21st International Conference on Distributed Computing Systems},
+booktitle = {21\textsuperscript{st} International Conference on Distributed Computing Systems},
 title = {{RAD: A Compile-Time Solution to Buffer Overflow Attacks}},
 year = {2001}
 }
@@ -18,7 +18,7 @@ year = {2001}
   author = {Cowan, Crispan and Po, Calton and Maier, Dave and Walpole, Jonathan
   and Bakke, Peat and Beattie, Steve and Grier, Aaron and Wagle, Perru and
     Yhang, Qian},
-  booktitle = {7th USENIX Security Symposium},
+  booktitle = {7\textsuperscript{th} USENIX Security Symposium},
   title = {{StackGuard: Automatic Adaptive Detection and Prevention of
     Buffer-Overflow Attacks}},
   year = {1998}