| article html file updated | 6 February 2020 06:00 CET | Update | https://www.mdpi.com/2072-666X/4/4/431 |
| article html file updated | 7 May 2019 21:12 CEST | Update | N/A |
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| article html file updated | 11 November 2015 10:26 CET | Update | N/A |
| article xml file uploaded | 11 November 2015 10:26 CET | Original file | https://www.mdpi.com/2072-666X/4/4/431/xml |
| article html file updated | 19 August 2015 12:37 CEST | Original file | N/A |
| article pdf uploaded. | 5 December 2013 17:09 CET | Version of Record | https://www.mdpi.com/2072-666X/4/4/431/pdf |
