S. Selvakumari - Bharathidasan University
C. Venkataraju - PG and Research Department of Physics, Thiru.Vi.Ka Govt Arts College, Thiruvarur 610 003, Tamilnadu, India
S. Muthu - Department of Physics, Puratchi Thalaivar Dr M.G.R Govt Arts and Science College, Uthiramerur, 603406, Tamilnadu, India
Ahmad Irfan
A. Saral - Chennai Mathematical Institute