| article html file updated | 5 February 2020 15:29 CET | Update | https://www.mdpi.com/2072-6643/2/9/1018 |
| article html file updated | 19 September 2019 01:02 CEST | Update | - |
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| article xml file uploaded | 14 August 2014 12:04 CEST | Original file | https://www.mdpi.com/2072-6643/2/9/1018/xml |
| article html file updated | 6 February 2013 18:34 CET | Update | - |
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| article html file updated | 18 January 2013 09:52 CET | Original file | - |
