Vijayakumar, C(Photosciences and Photonics Group, Chemical Sciences and Technology Division, National Institute for Interdisciplinary Science and Technology (CSIR), Thiruvananthapuram, 2007-09)
Aravind, P R; Warrier, K G K(Materials and Minerals Division, National Institute For Interdisciplinary Science and Technology (CSIR),Thiruvananthapuram, 2008)