Marignier, Jean-Louis. "The Physautotype: The World's Second Photographic Process, Invented by Niépce and Daguerre in 1832." The Daguerreian Annual (2002-2003): 350-362.

Marignier, Jean-Louis. "The Physautotype: The World's Second Photographic Process, Invented by Niépce and Daguerre in 1832." The Daguerreian Annual (2002-2003): 350-362.