| article html file updated | 6 February 2020 02:31 CET | Update | https://www.mdpi.com/2072-6643/5/6/2047 |
| article html file updated | 19 September 2019 21:32 CEST | Update | - |
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| article html file updated | 20 March 2019 23:31 CET | Update | - |
| article html file updated | 17 June 2015 10:02 CEST | Update | - |
| article html file updated | 6 August 2013 15:58 CEST | Original file | - |
| article xml file uploaded | 6 August 2013 15:58 CEST | Original file | https://www.mdpi.com/2072-6643/5/6/2047/xml |
| article pdf uploaded. | 6 June 2013 11:20 CEST | Version of Record | https://www.mdpi.com/2072-6643/5/6/2047/pdf |
