| article html file updated | 5 February 2020 17:06 CET | Update | https://www.mdpi.com/1999-4893/4/2/75 |
| article html file updated | 8 January 2020 13:34 CET | Update | - |
| article html file updated | 19 September 2019 04:00 CEST | Update | - |
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| article html file updated | 16 June 2015 15:38 CEST | Update | - |
| article html file updated | 14 August 2014 11:40 CEST | Update | - |
| article xml file uploaded | 14 August 2014 11:40 CEST | Update | https://www.mdpi.com/1999-4893/4/2/75/xml |
| article html file updated | 14 August 2014 11:20 CEST | Update | - |
| article xml file uploaded | 14 August 2014 11:20 CEST | Original file | - |
| article html file updated | 6 February 2013 20:46 CET | Update | - |
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| article html file updated | 28 January 2013 22:05 CET | Update | - |
| article html file updated | 26 January 2013 02:12 CET | Update | - |
| article html file updated | 22 January 2013 14:45 CET | Original file | - |
