| article html file updated | 5 February 2020 16:18 CET | Update | https://www.mdpi.com/2076-2615/1/1/69 |
| article html file updated | 8 January 2020 12:47 CET | Update | - |
| article html file updated | 19 September 2019 02:36 CEST | Update | - |
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| article html file updated | 29 June 2015 04:16 CEST | Update | - |
| article xml file uploaded | 29 June 2015 04:16 CEST | Update | https://www.mdpi.com/2076-2615/1/1/69/xml |
| article html file updated | 16 June 2015 13:24 CEST | Update | - |
| article xml file uploaded | 16 December 2014 04:30 CET | Update | - |
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| article html file updated | 10 December 2014 05:28 CET | Update | - |
| article xml file uploaded | 10 December 2014 05:28 CET | Original file | - |
| article html file updated | 6 February 2013 19:22 CET | Update | - |
| article html file updated | 5 February 2013 23:17 CET | Update | - |
| article html file updated | 28 January 2013 20:48 CET | Update | - |
| article html file updated | 26 January 2013 00:26 CET | Update | - |
| article html file updated | 22 January 2013 07:57 CET | Original file | - |
