| article html file updated | 5 February 2020 21:49 CET | Update | https://www.mdpi.com/2072-6694/4/3/873 |
| article html file updated | 8 May 2019 15:08 CEST | Update | - |
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| article html file updated | 17 June 2015 02:04 CEST | Update | - |
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| article xml file uploaded | 1 February 2013 09:38 CET | Original file | https://www.mdpi.com/2072-6694/4/3/873/xml |
| article html file updated | 29 January 2013 06:22 CET | Update | - |
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