Namawardana, D. G. K. K.; Wickramathilaka, P. A. K. Y.; Atapattu, H. Y. R.; De Silva, D. S. M.(4th International Research Symposium on Pure and Applied Sciences, Faculty of Science, University of Kelaniya, Sri Lanka, 2019)
Tharangika, M.O.; Atapattu, H.Y.R.; De Silva, D.S.M.(International Research Conference (IRCUWU 2019),”Sustainable Business Transition through Technology and Innovation”, Uva Wellassa University of Badulla, Sri Lanka, 2019)