| article html file updated | 5 February 2020 23:52 CET | Update | https://www.mdpi.com/2072-6643/5/1/23 |
| article html file updated | 8 May 2019 10:06 CEST | Update | N/A |
| article html file updated | 20 March 2019 16:54 CET | Update | N/A |
| article html file updated | 17 June 2015 05:19 CEST | Update | N/A |
| article html file updated | 8 February 2013 09:24 CET | Update | N/A |
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| article html file updated | 5 February 2013 11:27 CET | Update | N/A |
| article xml file uploaded | 5 February 2013 11:27 CET | Update | https://www.mdpi.com/2072-6643/5/1/23/xml |
| article html file updated | 24 January 2013 11:59 CET | Update | N/A |
| article html file updated | 21 January 2013 14:58 CET | Original file | N/A |
| article xml uploaded. | 21 January 2013 14:58 CET | Original file | N/A |
