some work as suggested by Simon

thesis/main.bib

@@ -190,11 +190,13 @@
     urldate={19.09.2019},
     title={IBM Q - What is quantum computing?},
     author={IBM},
+    note={https://www.ibm.com/quantum-computing/learn/what-is-quantum-computing/},
     year=2019
 }
 @online{
     intelqc,
     url={https://newsroom.intel.com/press-kits/quantum-computing/\#gs.2s0dux},
+    note={https://newsroom.intel.com/press-kits/quantum-computing/\#gs.2s0dux},
     urldate={19.09.2019},
     title={Intel Press Kit: Quantum Computing},
     author={Intel},
@@ -203,6 +205,7 @@
 @online{
     microsoftqc,
     url={https://www.microsoft.com/en-us/quantum/default.aspx},
+    note={https://www.microsoft.com/en-us/quantum/default.aspx},
     urldate={19.09.2019},
     title={Quantum Computing | Microsoft},
     author={Microsoft},
@@ -211,6 +214,7 @@
 @online{
 	dwavesys,
 	url={https://www.dwavesys.com/quantum-computing},
+	note={https://www.dwavesys.com/quantum-computing},
     urldate={19.09.2019},
     title={Quantum Computing | D-Wave Systems},
     author={D-Wave Systems Inc}
@@ -218,6 +222,7 @@
 @online{
 	lrzqc,
 	url={https://www.lrz.de/wir/newsletter/2019-08/\#LRZ_bereit_fuer_bayerische_Quantechnologie},
+	note={https://www.lrz.de/wir/newsletter/2019-08/\#LRZ_bereit_fuer_bayerische_Quantechnologie},
     urldate={19.09.2019},
     title={LRZ-Newsletter Nr. 08/2019 vom 01.08.2019},
     author={S. Vieser},
@@ -226,6 +231,7 @@
 @online{
 	heise25_18,
 	url={https://www.heise.de/select/ct/2018/25/1544250249368810},
+	note={https://www.heise.de/select/ct/2018/25/1544250249368810},
     urldate={19.09.2019},
     title={Europa entfesselt Quanten-Power},
     author={Arne Grävemeyer},
@@ -287,3 +293,10 @@
     title={The Computer Language Benchmarks Game},
     note={https://benchmarksgame-team.pages.debian.net/benchmarksgame/}
 }
+@article{
+    bouchet1991,
+    author={Andrk Bouchet},
+    title={Recognizing locally equivalent graphs},
+    year=1991,
+    note={https://pdf.sciencedirectassets.com/271536/1-s2.0-S0012365X00X02166/1-s2.0-0012365X9390357Y/main.pdf}
+}