1. M. Ilmer, R. Lecheler and M. Seibold, “Efficiency Enhancement of Hg-free Fluorescent PLANON Backlights by CAF”, IDW '99, pp. 1107–1108, 1999
2. T. Shiga, S. Mikoshiba and S. Shinada, “No-Mercury Flat discharge Lamp for LCD Backlighting”, IDW '99, pp. 347–350, 1999