1. From slide of Market Research Team Cellular,Philips Components, June 2000
2. P.H.L. Notten, “Batterij ModeHering & Batterij Management”, EET project proposal, March 2000
3. The energy chain concept originates from Frans Schoofs
4. R. Cates, R. Richey, “Charge NiCd and NiMH Batteries Properly”, Electronic Design, pp. 118–122, June 10, 1996
5. L.J. Curran, “Charger ICs Reflect Shift to Smart Batteries”, EDN, pp. S.10-S.11, July 3, 1997