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Articles in the Journal of the National Science Foundation of Sri Lanka are Open Access articles published under the Creative Commons Attribution-NoDerivatives 4.0 International License. This license permits use, distribution and reproduction, commercial and non-commercial, provided that the original work is properly cited and is not changed anyway. 

AUTHORS’ DECLARATION

I/We certify that I/we have participated sufficiently in the conception, design and execution of this work and the analysis of the data (where applicable) as well as in the writing of the manuscript, to take public responsibility for it.

I/We declare that all personnel who contributed substantially to the manuscript are listed as authors.

I/We certify that the material reported here represents original work carried out by me/us and that I/we shall produce the original data upon which the manuscript is based for examination by the editors or their assignees should they request it.

I/We understand that submission to this Journal implies that the manuscript will not be submitted elsewhere. Neither this manuscript nor one with substantially similar content under my/ our authorship has been published or is being considered for publication elsewhere, except as described in an annexure.

We give the rights to the corresponding author to make necessary changes of the manuscript and he/she will act as the guarantor for the manuscript on our behalf.

I/We hereby (jointly and) severally take responsibility for authorship of the above paper submitted for publication in Journal of the National Science Foundation of Sri Lanka