%0 Journal Article %T Study of the degree of photoactivation of the Z250 resin by photoacoustics %A Rocha, Rick %A Dias da Silva, Marcos %J Proceedings of SPIE %V 4950 %N 1 %P 224-228 %@ 0277-786X %D 2003-06-30 %I SPIE %~ DeepDyve