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Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (520.811 KB)
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Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (191.806 KB) | DOI: 10.14238/pi49.1.2009.54-8
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Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (240.461 KB) | DOI: 10.14238/pi43.5.2003.162-4