WASET
Prapulla, V. , Mitra, A. , Bhattacharjee, R. , Nandi, S.. "A Simplified Adaptive Decision Feedback Equalization Technique for π/4-DQPSK Signals". World Academy of Science, Engineering and Technology, Open Science Index 24, International Journal of Electronics and Communication Engineering (2008), 2(12), 2726 - 2733.