added sources to the diploma thesis (for my part)

bib.bib

@@ -17,4 +17,12 @@ author = {{Association for Progressive Communications}},
 title = {{Wireless technology is irreplaceable for providing access in remote and scarcely populated regions}},
 url = {http://www.apc.org/en/news/strategic/world/wireless-technology-irreplaceable-providing-access},
 year = {2006}
-}
+}
+
+@misc{REDDIT_2018,
+    note = {letzter Zugriff am 01.01.2022},
+    author = {REDDIT},
+    title = {I researched the market share of game engines on Steam, from over 60,000 Steam games.},
+    url = {https://www.reddit.com/r/gamedev/comments/8s20qp/i_researched_the_market_share_of_game_engines_on/},
+    year = {2018},
+}