Critical analysis on beat the valuation of Electronic Travel Authorisation (ETA) system in Sri Lanka 
Ratnayaka, D.S.C.T.R.D. 
 -  2016. 
 - xii.92p.p: 
<br/><br/> Ajithchandra, H.M. 
<br/><br/><label>Gov. Doc. Class. No.: </label>MPM/T/304