Sajith Menon; Suresh Das(Photosciences and Photonics Section Chemical Sciences and Technology Division,National Institute For Interdisciplinary Science and Technology (CSIR),Thiruvananthapuram, 2011)
Shinto Varghese(Photosciences and Photonics Section, Chemical Sciences and Technology Division, National Institute for Interdisciplinary Science and Technology(CSIR), Thiruvananthapuram., 2010)