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Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21771/jrtppi.2016.v7.no2.p57-66
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Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21771/jrtppi.2017.v8.no1.p13-22
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Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21771/jrtppi.2017.v8.no2.p67-75