| article html file updated | 5 February 2020 23:49 CET | Update | https://www.mdpi.com/2072-6651/5/1/60 |
| article html file updated | 8 May 2019 10:13 CEST | Update | - |
| article html file updated | 20 March 2019 16:48 CET | Update | - |
| article html file updated | 17 June 2015 05:16 CEST | Update | - |
| article html file updated | 8 February 2013 09:23 CET | Update | - |
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| article html file updated | 5 February 2013 12:15 CET | Update | - |
| article xml file uploaded | 5 February 2013 12:15 CET | Original file | https://www.mdpi.com/2072-6651/5/1/60/xml |
| article html file updated | 24 January 2013 11:55 CET | Original file | - |
