==See also==*Duracell Bunny*The Puttermans==Further reading==* Hintz, Eric S., “Portable Power: Inventor Samuel Ruben and the Birth of Duracell,” "Technology and Culture," 50 (Jan. 2009), 24–57.
* Hintz, Eric S., "Portable Power: Inventor Samuel Ruben and the Birth of Duracell, " "Technology and Culture," 50 (Jan. 2009), 24-57.