diff --git a/references.bib b/references.bib
index 8717f1f..31aa2bf 100644
--- a/references.bib
+++ b/references.bib
@@ -1248,6 +1248,16 @@
   doi = {10/gb4k9h}
 }
 
+@inproceedings{gamage2021predictable,
+  title = {So {{Predictable}}! {{Continuous 3D Hand Trajectory Prediction}} in {{Virtual Reality}}},
+  booktitle = {{{ACM Symp}}. {{User Interface Softw}}. {{Technol}}.},
+  author = {Gamage, Nisal Menuka and Ishtaweera, Deepana and Weigel, Martin and Withana, Anusha},
+  date = {2021},
+  pages = {332--343},
+  doi = {10/gm5z7f},
+  isbn = {978-1-4503-8635-7}
+}
+
 @article{gaudeni2019presenting,
   title = {Presenting {{Surface Features Using}} a {{Haptic Ring}}: {{A Psychophysical Study}} on {{Relocating Vibrotactile Feedback}}},
   shorttitle = {Presenting {{Surface Features Using}} a {{Haptic Ring}}},
@@ -1960,8 +1970,7 @@
   shorttitle = {Defining {{Haptic Experience}}},
   booktitle = {{{CHI Conf}}. {{Hum}}. {{Factors Comput}}. {{Syst}}.},
   author = {Kim, Erin and Schneider, Oliver},
-  date = {2020-04-21},
-  pages = {1--13},
+  date = {2020},
   doi = {10/gg2tfb},
   isbn = {978-1-4503-6708-0}
 }
@@ -3181,6 +3190,16 @@
   doi = {10/ch5p}
 }
 
+@article{skarbez2017survey,
+  title = {A {{Survey}} of {{Presence}} and {{Related Concepts}}},
+  author = {Skarbez, Richard and Brooks, Jr., Frederick P. and Whitton, Mary C.},
+  date = {2017},
+  journaltitle = {ACM Comput. Surv.},
+  volume = {50},
+  number = {6},
+  doi = {10/gfz8jf}
+}
+
 @article{skarbez2021revisiting,
   title = {Revisiting {{Milgram}} and {{Kishino}}'s {{Reality-Virtuality Continuum}}},
   author = {Skarbez, Richard and Smith, Missie and Whitton, Mary C.},