1. Kent Display, Inc., Kent, OH 44240, U.S.A.
2. E-ink Corporation, Cambridge, MA 02138, U.S.A.
3. KOLIN i-Library, http://i-library.kolin.com.tw.
4. SONY PRS-505, http://www.sonystyle.com/webapp/wcs/stores/servlet/Product Display?catalogId=10551&storeId=10151&langId=-1&productId=8198552921665705544.
5. Ergonomic requirements for reflective liquid-crystal displays