TCR-MHC docking orientation: natural selection, or thymic selection?
Collins EJ, Riddle DS, Immunol Res, 2008 - link

A correlation between TCR Valpha docking on MHC and CD8 dependence: implications for T cell selection.
Buslepp J, Wang H, Biddison WE, Appella E, Collins EJ, Immunity, 2003 Oct - link