Šimon, V., Masetti, N., Hudec, R., Pizzichini, G. Properties of GRB optical afterglows: colors and luminosities. In: COSTA, E., FRONTERA, F., HJORTH, J., eds. Gamma-ray bursts in the afterglow era. Berlin: Springer, 2001, s. 148-150. ESO Astrophysics symposia.