Minor fixes in collection.bib

paper/1_intro.tex

@@ -57,8 +57,6 @@ machine code by refinement; the second is to formalize
 a specification and then verify that some
 implementation satisfies it.
 
-% One of the earliest example of this first approach is the
-% B-method~\cite{Abrial:1996:BAP:236705} in 1986.
 The synthesis approach was used by Zinzindohou{\'{e}}, Bartzia, and Bhargavan to build a verified extensible
 library of elliptic curves~\cite{Zinzindohoue2016AVE} in F*~\cite{DBLP:journals/corr/BhargavanDFHPRR17}.
 This served as ground work for the cryptographic library HACL*~\cite{zinzindohoue2017hacl}