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Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (119.43 KB) | DOI: 10.14238/pi49.6.2009.372-8
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Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14238/pi45.3.2005.107-10
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Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14238/pi45.6.2005.251-5