Anuruddhika, M. L. P.; Premarathna, L. P. N. D; Perera, K. K. K. R.; Hansameenu, W. P. T.; Weerasinghe, V. P. A.(Faculty of Science, University of Kelaniya, Sri Lanka., 2021)
Gunawardhana, M. P. A. V.; Jayatissa, C. A. N. W. K.; Seneviratne, J. A.(Department of Industrial Management, Faculty of Science, University of Kelaniya Sri Lanka, 2021)