| article html file updated | 23 February 2021 07:25 CET | Update | https://www.mdpi.com/2079-3200/2/1/8 |
| article html file updated | 6 February 2020 07:13 CET | Update | N/A |
| article html file updated | 20 September 2019 05:49 CEST | Update | N/A |
| article html file updated | 7 May 2019 18:44 CEST | Update | N/A |
| article html file updated | 21 March 2019 12:13 CET | Update | N/A |
| article html file updated | 19 August 2015 20:08 CEST | Update | N/A |
| article html file updated | 10 November 2014 07:35 CET | Original file | N/A |
| article xml file uploaded | 10 November 2014 07:35 CET | Original file | https://www.mdpi.com/2079-3200/2/1/8/xml |
| article pdf uploaded. | 12 February 2014 13:50 CET | Version of Record | https://www.mdpi.com/2079-3200/2/1/8/pdf |
