Dr. V. Ananthaswamy, Assistant Professor, Department of Mathematics, The Madura College (Autonomous), India
E-mail: ananthu9777@rediffmail.com

Dr. Meenakshi Singh, Professor, Department of Chemistry, School of Basic and Applied Sciences, Galgotias University, India
Email: meenakshi.pundir@galgotiasuniversity.edu.in, gzbpundir86@gmail.com