| article html file updated | 5 February 2020 20:52 CET | Update | https://www.mdpi.com/1424-8220/12/6/8437 |
| article html file updated | 8 January 2020 16:59 CET | Update | - |
| article html file updated | 19 September 2019 11:17 CEST | Update | - |
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| article html file updated | 14 August 2014 12:05 CEST | Update | - |
| article xml file uploaded | 14 August 2014 12:05 CEST | Original file | https://www.mdpi.com/1424-8220/12/6/8437/xml |
| article html file updated | 7 February 2013 13:00 CET | Update | - |
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| article html file updated | 26 January 2013 11:21 CET | Update | - |
| article html file updated | 23 January 2013 20:16 CET | Original file | - |
