| article html file updated | 6 February 2020 15:35 CET | Update | https://www.mdpi.com/2073-4409/4/1/71 |
| article html file updated | 7 May 2019 01:41 CEST | Update | N/A |
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| article html file updated | 9 November 2017 11:44 CET | Update | N/A |
| article html file updated | 21 August 2015 06:45 CEST | Update | N/A |
| article html file updated | 1 April 2015 11:10 CEST | Original file | N/A |
| article xml file uploaded | 1 April 2015 11:10 CEST | Original file | https://www.mdpi.com/2073-4409/4/1/71/xml |
| article pdf uploaded. | 29 January 2015 14:02 CET | Version of Record | https://www.mdpi.com/2073-4409/4/1/71/pdf |
