| article html file updated | 5 February 2020 21:19 CET | Update | https://www.mdpi.com/1660-4601/9/8/2620 |
| article html file updated | 19 September 2019 12:09 CEST | Update | - |
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| article html file updated | 17 June 2015 01:16 CEST | Update | - |
| article html file updated | 7 February 2013 13:48 CET | Update | - |
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| article html file updated | 29 January 2013 15:59 CET | Update | - |
| article xml file uploaded | 29 January 2013 15:59 CET | Original file | https://www.mdpi.com/1660-4601/9/8/2620/xml |
| article html file updated | 29 January 2013 05:32 CET | Update | - |
| article html file updated | 26 January 2013 15:48 CET | Update | - |
| article html file updated | 23 January 2013 22:40 CET | Original file | - |
