Fiorentini, E. (2006). Camera obscura vs. camera lucida: Distinguishing early nineteenth century modes of seeing. Max-Planck-Institut für Wissenschaftsgeschichte.

Fiorentini, Erna. Camera Obscura Vs. Camera Lucida: Distinguishing Early Nineteenth Century Modes of Seeing. Berlin: Max-Planck-Institut für Wissenschaftsgeschichte, 2006.

Fiorentini, Erna. Camera Obscura Vs. Camera Lucida: Distinguishing Early Nineteenth Century Modes of Seeing. Max-Planck-Institut für Wissenschaftsgeschichte, 2006.