| article html file updated | 5 February 2020 21:54 CET | Update | https://www.mdpi.com/1424-8247/5/9/1008 |
| article html file updated | 19 September 2019 13:14 CEST | Update | - |
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| article html file updated | 13 September 2013 17:16 CEST | Update | - |
| article xml file uploaded | 13 September 2013 17:16 CEST | Original file | https://www.mdpi.com/1424-8247/5/9/1008/xml |
| article html file updated | 7 February 2013 14:54 CET | Update | - |
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| article html file updated | 29 January 2013 06:30 CET | Update | - |
| article html file updated | 24 January 2013 01:41 CET | Original file | - |
