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Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26740/jupe.v9n2.p60-64
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Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26740/jepk.v6n2.p159-170
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Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26740/jepk.v6n2.p159-170
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Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22236/agregat_vol5/is1pp78-96