biblatex-cse.cbx

\ProvidesFile{biblatex-cse.cbx}

\RequireCitationStyle{authoryear}

\renewcommand*{\nameyeardelim}{\addspace}
\renewcommand*{\andothersdelim}{\ifnum\value{listcount}>2 \finalandcomma\fi\addspace}
\renewcommand{\finalnamedelim}{\ifnum\value{liststop}>2
\finalandcomma\fi\ifnum\value{liststop}=2 \addspace\bibstring{and}\fi\space}

\endinput