V. Ravichandran is Professor of mathematics at the National Institute of Technology, Tiruchirappalli, India. He held positions at Universiti Sains Malaysia (from 2004 to 2007 and 2011 to 2012) and at the University of Delhi, India (from 2007 to 2018). He specializes in geometric function theory and has published over 150 research papers. Since 2004, he has served as Editor of the Bulletin of the Malaysian Mathematical Sciences Society. Atul Kumar Razdan served the Department of Mathematics, University of Delhi, India (from 2004 to 2008). He started his career as Lecturer in 1995 at Indira Gandhi National Open University (IGNOU), New Delhi, India, until 2004. His area of research is algebra on which he has published several papers in journals of international repute.