\begin{table}%t3
\caption{\label{crse}Electron impact reactions.}
\small%\centering
\par
\begin{tabular}[h]{ccc}
\hline\hline				
Species &Processes & References 		\\
\hline
H	& elastic scattering & \citet{Kingston80}, \citet{Shyn89}, \citet{Shyn92} 	\\
	& H(2s) & \citet{Janev87} \\ 
	& H(2p) & \citet{James97} \\
	& $n=3$, 4, 5, 6 & \citet{Janev87} \\
	& H$^{+}$ & \citet{Shah87} \\
\hline
H$_{2}$ & elastic scattering & \citet{Jain92}, \citet{Muse08}\\
	& rotation & \citet{Dalgarno99} \\
	& $v=1$, 2 & \citet{Janev87} \\
	& B$^{1}\Sigma_{u}^{+}$, B$^{ \prime}$ ${1}\Sigma_{u}^{+}$,  B$^{ \prime \prime}$ ${1}\Sigma_{u}^{+}$& \citet{Dalgarno99} \\
	& C $^{1} \Pi_{u}^{+} $ & $''$ \\
	& D $^{1} \Pi_{u}$, D$^{\prime}$ $^{1} \Pi_{u}$ & $''$ \\
	& E, F $^{1}\Sigma_{g}^{+}$ & $''$ \\
	& a$^{3}\Sigma_{g}^{+}$, b $^{3}\Sigma_{u}^{+}$, c $^{3}\Pi_{u}$ & \citet{Janev87} \\ 
	& higher excited states & \citet{Dalgarno99} \\
	& H$^{+}$ & \citet{Liu2004} \\
	& H$_{2}^{+}$ & \citet{Janev87} \\\noalign{\smallskip}
\hline
	He	& elastic scattering & \citet{Porter87} \\
	& 2$^{3}$S, 2$^{1}$S, 2$^{3}$P, 2$^{1}$P, & \citet{Ralchenko08} \\
	& 3$^{3}$S, 3$^{1}$S, 3$^{3}$P, 3$^{1}$P, 3$^{3}$D, 3$^{1}$D, & $''$ \\
	&4$^{3}$S, 4$^{1}$S, 4$^{3}$P, 4$^{1}$P, 4$^{3}$D, 4$^{1}$D,  4$^{3}$F, 4$^{1}$F & $''$ \\
	& He$^{+}$ & $''$ \\
	&He$^{++}$ & \citet{Pindzola07} \\
\hline
CH$_{4}$ & elastic scattering & \citet{Davies89} \\
	& $v=1$, 2, 3, 4 & $''$ \\
	& dissociation states & $''$ \\
	& CH$_{4}^{+}$, CH$_{3}^{+}$, CH$_{2}^{+}$ & \citet{Liu06} \\ 
	\noalign{\smallskip}
\hline
\end{tabular} 
\end{table}