Nick, Semenoff; Christof, C. (1999). "Using Dry Copier Toners in Intaglio and Electro-Etching of metal Plates". Leonardo. 24 (4). MIT Press: 389–394. doi:10.2307/1575513. JSTOR1575513. S2CID191386942.
US 5102520, Behr, Marion & Behr, Omri, "Electrolytic etching process and apparatus therefor", published 1992-04-07. The voltage should be adjustable to operate accurately within a rather narrow voltage range, such that the minimum voltage shall be at least that of the ionization potential of the metal object in the electrolyte chosen and the maximum shall not substantially exceed the sum of the decomposition voltage of the aqueous electrolyte and the over-voltage of the cathode selected.
US 5112453, Behr, Omri & Behr, Marion, "Method and apparatus for producing etched plates for graphic printing", published 1992-05-12
For the etching technique, see MacKay, Ernest (1925). "Sumerian Connexions with Ancient India". The Journal of the Royal Asiatic Society of Great Britain and Ireland (4): 699. JSTOR25220818.
Nick, Semenoff; Christof, C. (1999). "Using Dry Copier Toners in Intaglio and Electro-Etching of metal Plates". Leonardo. 24 (4). MIT Press: 389–394. doi:10.2307/1575513. JSTOR1575513. S2CID191386942.
Nick, Semenoff; Christof, C. (1999). "Using Dry Copier Toners in Intaglio and Electro-Etching of metal Plates". Leonardo. 24 (4). MIT Press: 389–394. doi:10.2307/1575513. JSTOR1575513. S2CID191386942.
