Rath, P.K., Centurion University of Technology and Management, Odisha, India Rath, Prasanta Kumar , Centurion University of Technology and Management, Paralakhemundi, Odisha, India Rath, Prasanta Kumar, Centurion University of Technology and Management, Paralakhemundi, Odisha, India; Department of Physics, University of Naples “Federico II” and INFN, Naples, Italy Rathore, Nisha Singh , Department of Applied Sciences, KCC Institute of Technology and Management, Greater Noida, India Rathore, Nisha Singh , Department of Applied Sciences, KCC institute of Technology and Management, Greater Noida, India Raut, Vilas, Department of Mathematics, M. M. Mahavidyalaya, Darwah, Dist. Yavatmal-India Raut, Vilas B., Department of Mathematics, Mungsaji Maharaj Mahavidyalaya, Darwha, Dist. Yavatmal, Maharashtra, India Rautkar, Dhiraj, Department of Mathematics, PRMIT&R, Badnera-Amaravati, India Ravikumar, Vanipenta, Department of Mathematics, Annamacharya Institute of Technology and Sciences, (Autonomous), Rajampet, Andhra Pradesh, India Rawat, T.K., GLA University, Greater Noida, India Ray, Pranjal Kumar, Department of Mathematics, Gyanpeeth Degree College, Nikashi, Baksa, BTR-781372, Assam, India Raza, Ali, Department of Mathematics and Statistical Sciences, Lahore School of Economics, Lahore, Pakistan; Department of Mathematical Sciences, University of Stellenbosch, Stellenbosch, South Africa Raza, Muhammad, Department of Mathematics, COMSATS University Islamabad, Sahiwal, Pakistan Raza, Salman, Department of Physics, University of Karachi, Karachi, Pakistan Razikov, Takhirdjon M., Institute of Semiconductor Physics and Microelectronics at the National University of Uzbekistan, Tashkent, Uzbekistan Razykov, T.M., Physical and Technical Institute of the Academy of Sciences of the Republic of Uzbekistan, Tashkent, Uzbekistan Razykov, T.M., Physical-Technical Institute, Tashkent, Uzbekistan; Institute of Semiconductors Physics and Microelectronics, Tashkent, Uzbekistan Razzakov, J.A., Urgench State University, Urgench, Uzbekistan Razzokov, A.Sh., Urgench State University, Urgench, Uzbekistan Razzokov, Jamoliddin I., Institute of Fundamental and Applied Research, National Research University TIIAME, Tashkent, Uzbekistan; Department of Biotechnology, Tashkent State Technical University, Tashkent, Uzbekistan Rebhi, Redha, Department of Mechanical Engineering, University of Medea, Medea, Algeria; LERM-Renewable Energy and Materials Laboratory, University of Medea, Medea, Algeria Rebrov, Volodymyr A., Institute of Applied Physics NAS of Ukraine, Sumy, Ukraine Redchyts, Dmytro O., Institute of Transport Systems and Technologies of National Academy of Sciences of Ukraine, Dnipro, Ukraine Reddy, Anitha Deevi, Mathematics and Computing skills unit, Preparatory Studies Centre, University of Technology and Applied Sciences – Nizwa, Sultanate of Oman Reddy, E. Keshava, Department of Mathematics, JNTUA College of Engineering, Ananthapuramu, Andhra Pradesh, India Reddy, G. Jithender, Department of Mathematics, VNR Vignana Jyothi Institute of Engineering and Technology, Hyderabad, Telangana State, India Reddy, G. Ravindranath, MLR Institute of Technology, Dundigal, Hyderabad, Telangana, India Reddy, G.V.R., Department of Mathematics, Koneru Lakshmaiah Education Foundation, Vaddeswaram, India Reddy, Madduru Sudhakara, Department of Mathematics, SVR Engineering College, Nandyal, India Reddy, Prabhakara Reddy Deevi, Mathematics and Computing skills unit, Preparatory Studies Centre, University of Technology and Applied Sciences – Nizwa, Sultanate of Oman Reddy, R. Chandra Sekhar, Department of Mathematics, Rajeev Gandhi Memorial College of Engineering and Technology, Nandyal, Andhra Pradesh, India Reddy, S.R.R., Department of Mathematics, Koneru Lakshmaiah Education Foundation, Bowrampet, Hyderabad, Telangana, India Reddy, Seethi Reddy Reddisekhar, Department of Mathematics, Koneru Lakshmaiah Education Foundation, Bowrampet, Hyderabad, Telangana, India Reddy, Y. Rameswara, Department of Mechanical Engineering, JNTUACE, Pulivendula, Andhra Pradesh, India Rehman, Najma Abdul, Department of Mathematics, COMSATS University Islamabad, Sahiwal, Pakistan Rekab-Djabri, Hamza, Laboratory of Micro and Nanophysics (LaMiN), National Polytechnic School Oran, Oran, Algeria; Faculty of Nature and Life Sciences and Earth Sciences AMO University, Bouira, Algeria Rekha, M., Department of EEE, Gokaraju Rangaraju Institute of Engineering and Technology, Bachupally, Hyderabad, India Rekik, B., Laboratory of Physical-Chemical Inorganic Materials and their applications (LPCMIA), Saad Dahleb University, Blida, Algeria Remache, L., Laboratory of Materials and System Structure and their Reliability, Oum El Bouaghi University, Oum El Bouaghi, Algeria Remeta, Eugene Yu., Institute of Electron Physics, National Academy of Sciences of Ukraine, Uzhhorod, Ukraine Resan, S., Molecular Engineering and Computational Modeling Lab, Department of Physics, College of Science, University of Basrah, Basrah, Iraq Revathi, Gadamsetty, Department of Mathematics, Gokaraju Rangaraju Institute of Engineering and Technology, Bachupally, Hyderabad, India Revathi, Gadamsetty, Department of Mathematics, Gokaraju Rangaraju Institute of Engineering and Technology, Bachupally, Hyderabad, India Rezini, Saliha, Faculty of Sciences and Technology, Abdelhamid Ibn Badis University, Mostaganem, Algeria Riabchykov, Dmytro , V.N. Karazin Kharkiv National University, Kharkiv, Ukraine Riabenko, Iuliia, V.N. Karazin Kharkiv National University, School of radiophysics, biomedical electronics and computer systems, Kharkiv, Ukraine; Institute of Quantum Optics, Leibniz University Hannover, Hannover, Germany Riabenko, Iuliia, V.N. Karazin Kharkiv National University, School of radiophysics, biomedical electronics and computer systems, Kharkiv, Ukraine; Institute of Quantum Optics, Leibniz University Hannover, Hannover, Germany Ridha, Salah M.A., Department of Physics, College of Science, University of Kirkuk, Iraq Ridha, Salah M.A., Department of Physics, College of Sciences, University of Kirkuk, Kirkuk, Iraq Rihia, Ghani, LEVRES Laboratory, University of El Oued, El Oued, Algeria