Pentru mai multe informatii referitoare la mediile optice de stocare si carduri de memorie puteti vizita site-urile urmatoare.

Companii RITEK
- RITEK Corporation (www.ritek.com)
- Conrexx Technology BV / RITEK Europe (www.conrexx.com)
- RITEK USA (www.ritekusa.com)

Organizatii
- DVD+RW Alliance (www.dvdrw.com)
- DVD Forum (www.dvdforum.com)
- CompactFlash Association (www.compactflash.org)
- SD Card Association (www.sdcard.org)
- MultiMediaCard Association (www.mmca.org)