Complete related work

references.bib

@@ -686,6 +686,17 @@
   doi = {10/gf4g6t}
 }
 
+@article{choi2004perceived,
+  title = {Perceived {{Instability}} of {{Virtual Haptic Texture}}. {{I}}. {{Experimental Studies}}},
+  author = {Choi, Seungmoon and Tan, Hong Z.},
+  date = {2004},
+  journaltitle = {Presence Teleoperators Virtual Environ.},
+  volume = {13},
+  number = {4},
+  pages = {395--415},
+  doi = {10/cwf3sw}
+}
+
 @article{choi2013vibrotactile,
   title = {Vibrotactile {{Display}}: {{Perception}}, {{Technology}}, and {{Applications}}},
   shorttitle = {Vibrotactile {{Display}}},