'A' cited 'B'.

'A'
Transmission type twisted nematic liquid crystal display for three gray-level phase-modulated holographic data storage systems
Author(s): Das B (Das, Bhargab)1, Vyas S (Vyas, Sunil)1, Joseph J (Joseph, Joby)1, Senthilkumaran P (Senthilkumaran, P.)1, Singh K (Singh, Kehar)1  
Source: OPTICS AND LASERS IN ENGINEERING    Volume: 47    Issue: 11    Pages: 1150-1159    Published: NOV 2009    
esses:
1. Indian Inst Technol, Dept Phys, New Delhi 110016, India

'B'
Optimization of the spatial light modulation with twisted nematic liquid crystals by a genetic algorithm
Author(s): Hahn J (Hahn, Joonku)1, Kim H (Kim, Hwi)1, Lee B (Lee, Byoungho)1  
Source: APPLIED OPTICS    Volume: 47    Issue: 19    Pages: D87-D95    Published: JUL 1 2008