A ten-year follow-up of a study of memory for the attack of September 11, 2001: Flashbulb memories and memories for flashbulb events. Journal of Experimental of Psychology: General

Hirst, W., Phelps, E.A., Meksin, R., Vaidya, C.J., Johnson, M.K., Mitchell, K.J., Buckner, R.L., Budson, A.E., Gabrieli, J.D., Lustig, C., Mather, M., Ochsner, K.N., Schacter, D., Simons, J.S., Lyle, K.B., Cuc, A.F.& Olsson, A. (2015). A ten-year follow-up of a study of memory for the attack of September 11, 2001: Flashbulb memories and memories for flashbulb events.  Journal of Experimental of Psychology: General, 144, 604-23.