Affiliation: | 1. Department of Mathematics, Dr. Ambedkar Institute of Technology, Bangalore, 560 056, India 2. Department of Mathematics, Bangalore University, Bangalore, 560 001, India 3. Department of Mathematics,, Sai Vidya Institute of Technology, Bangalore, 560 064, India 4. Dan F. Smith Department of Chemical Engineering, Lamar University, Beaumont, TX, 77710, USA
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