1. Department of Mathematics, LMNO, University of Caen, Caen, France
2. Department of Statistics and Data Science, CHRIST (Deemed to be University), Bangalore, Karnataka, India
3. SCAPS, Marian College Kuttikkanam, Peermade, Idukki District, Kerala, India
4. Department of Statistics, Chaudhary Charan Singh University, Meerut, India