Composite Vector Leptoquarks in $e^+ e^-$, $\gamma e$, and   $\gamma\gamma$ Colliders
  We study the signals for composite vector leptoquarks in $e^+ e^-$ colliders (LEP II, NLC, and CLIC) through their effects on the production of jet pairs, as well as their single and pair productions. We also analyze their production in $\gamma e$ and $\gamma\gamma$ collisions. 
J.E. Cieza Montalvo and O.J.P. Eboli