finished vr headset chapter

bib.bib

@@ -338,7 +338,7 @@
     year = {2015},
     author = {Brenna Hillier},
     note = {letzter Zugriff 8.2.2022},
-    url = {https://www.vg247.com/source-engine-2-doesnt-have-hidden-costs-or-royalties-but-is-steam-exclusive},
+    url = {https://www.vg247.com/souVortrce-engine-2-doesnt-have-hidden-costs-or-royalties-but-is-steam-exclusive},
 }
 
 @misc{Dennis_Ziesecke_2019,
@@ -356,3 +356,35 @@
     year = {2019},
     url = {https://www.youtube.com/watch?v=cjXSXmHZP3Q}
 }
+
+@misc{ADI_ROBERTSON_2020,
+    author = {Adi Robertson},
+    url = {https://www.theverge.com/2020/9/16/21440086/facebook-oculus-connect-recap-biggest-announcements-quest-rift-games},
+    title = {Facebook Connect 7: the 5 biggest announcements},
+    note = {letzer Zugriff 21.2.2022},
+    year = {2020},
+}
+
+@article{Macedo_2020,
+    author = {Macedo, Vitor and Runde, Christoph},
+    year = {2020},
+    month = {08},
+    pages = {},
+    title = {Head-Mounted Displays: Messung räumlicher Präzision bei VR-Trackingsystemen},
+    doi = {10.6084/m9.figshare.12752927}
+}
+
+@misc{ALSOP_2019,
+    author = {Thomas Alsop},
+    year = {2019},
+    note = {letzter Zugriff 22.2.2022},
+    title = {Reported price of leading consumer virtual reality (VR) headsets in 2019, by device},
+    url = {https://www.statista.com/statistics/1096886/reported-price-of-leading-consumer-vr-headsets-by-device/},
+}
+
+@misc{Martin_Rakver,
+    author = {Martin Rakver},
+    note = {letzter Zugriff 22.2.2022},
+    title = {3 Ways to Get Full Body Tracking With Oculus Quest / Quest 2},
+    url = {https://smartglasseshub.com/oculus-quest-full-body-tracking/},
+}