| article html file updated | 29 August 2025 21:25 CEST | Update | https://www.mdpi.com/1996-1944/8/1/1 |
| article html file updated | 15 July 2022 23:42 CEST | Update | N/A |
| article html file updated | 6 February 2020 14:43 CET | Update | N/A |
| article html file updated | 7 May 2019 03:27 CEST | Update | N/A |
| article html file updated | 25 March 2019 19:43 CET | Update | N/A |
| article html file updated | 21 August 2015 04:43 CEST | Update | N/A |
| article html file updated | 22 January 2015 10:32 CET | Original file | N/A |
| article xml file uploaded | 22 January 2015 10:32 CET | Original file | https://www.mdpi.com/1996-1944/8/1/1/xml |
| article pdf uploaded. | 5 January 2015 08:45 CET | Updated version of record | https://www.mdpi.com/1996-1944/8/1/1/pdf |
| article pdf uploaded. | 23 December 2014 17:11 CET | Version of Record | https://www.mdpi.com/1996-1944/8/1/1/pdf-vor |
