O'Donnell, Casey (2011). „The Nintendo Entertainment System and the 10NES Chip: Carving the Video Game Industry in Silicon”. Games and Culture. 6 (1): 83—100. doi:10.1177/1555412010377319.
espacenet.com
worldwide.espacenet.com
US patent 4799635, Nakagawa Katsuya, "System for determining authenticity of an external memory used in an information processing apparatus", assigned to Nintendo Co., ltd
US patent 5004232, Wong, John J, "Computer game cartridge security circuit", assigned to Macronix, Inc.
US patent 4799635, Nakagawa Katsuya, "System for determining authenticity of an external memory used in an information processing apparatus", assigned to Nintendo Co., ltd
