by Sanjay Kumar Jha.
by Bhattacharya, Rabindra N.
by Biswas, Madhumita.
by Jinghan, M.L | Sharma, Chandar K.
by Eugine, T.
by Brown,Lester R.
by Batabyal, Amitrajeet A | Nijkamp, Peter.
by Endres, Alfred.
by Hanley, Nick | Barbier, Edward.
by Beaton, Russ | Maser, Chris.
by Cerdá Tena, Emilio | Labandeira Villot, Xavier.
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