Add more citations

sietch.bib

@@ -6,11 +6,12 @@
 %              Kelsey, K., "Compression and information leakage of
 %              plaintext", Fast software encryption , 2002.
 %
+
 @misc{Zcash,
    author={Daira Hopwood},
    title={Zcash Protocol Specification},
    url={https://github.com/zcash/zips/blob/master/protocol/protocol.pdf},
-   urldate={2017-12-28}
+   urldate={2020-05-08}
 }
 
 @misc{SietchRPC,
@@ -27,11 +28,11 @@
     urldate={2020-05-08}
 }
 
-@misc{Komodo,
-   author={superNET},
-   title={Komodo Platform},
-   url={https://komodoplatform.com},
-   urldate={2017-12-28}
+@misc{Hush,
+   author={The Hush Developers},
+   title={Hush},
+   url={https://myhush.org},
+   urldate={2020-05-08}
 }
 
 @misc{BarterDEX,

sietch.tex

@@ -530,7 +530,7 @@ by block explorers nor well understood by the industry.
 
 A \sheilded transaction has at least one \shielded address, referred to as a \zaddr.
 
-We here concern ourselves only with \textbf{Zcash Protocol} which allows us to specify
+We here concern ourselves only with \textbf{Zcash Protocol} \cite{Zcash} which allows us to specify
 a coherent language and symbols to describe the new ITM \zaddr linkability attack and mitigations
 against it. All techniques here could technically also be used against transparent
 blockchains, but since they leak all the useful metadata already, it would serve
@@ -802,7 +802,7 @@ By design, Sietch is opt-out and by default all users use it without knowing it,
 Sietch makes every individual shielded transaction more complex which creates a harder-to-analyze
 transaction graph, helping even users which have custom software that does not use Sietch.
 
-The effect of almost all Hush users using Sietch all the time without knowing it, is a
+The effect of almost all Hush \cite{Hush} users using Sietch all the time without knowing it, is a
 "herd immunity" against de-anonymization. The price is waiting a few extra seconds
 for each transaction and the Hush community feels it is quite well worth it.