Silva, D.A.C.Gunawardhana, M.R.Sanjeewani, H.L.G.2015-04-102015-04-102008Silva, D.A.C., Gunawardhana, M.R. and Sanjeewani, H.L.G., 2008. Informal tourism sector in Sri Lanka: problems and prospects for triple bottom based tourism development, In: Proceedings of the International Conference on Social Sciences, Sri Lanka, University of Kelaniya, pp 341.http://repository.kln.ac.lk/handle/123456789/6929enArticle