| article html file updated | 5 February 2020 20:50 CET | Update | https://www.mdpi.com/2072-6694/4/2/581 |
| article html file updated | 8 May 2019 17:14 CEST | Update | N/A |
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| article html file updated | 17 June 2015 00:31 CEST | Update | N/A |
| article html file updated | 7 February 2013 12:57 CET | Update | N/A |
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| article html file updated | 1 February 2013 09:36 CET | Update | N/A |
| article xml file uploaded | 1 February 2013 09:36 CET | Original file | https://www.mdpi.com/2072-6694/4/2/581/xml |
| article html file updated | 29 January 2013 04:43 CET | Update | N/A |
| article html file updated | 26 January 2013 11:17 CET | Update | N/A |
| article html file updated | 23 January 2013 20:06 CET | Original file | N/A |
