| article html file updated | 29 August 2025 21:14 CEST | Update | https://www.mdpi.com/2218-1989/4/3/751 |
| article html file updated | 15 July 2022 23:22 CEST | Update | - |
| article html file updated | 6 February 2020 12:03 CET | Update | - |
| article html file updated | 7 May 2019 08:39 CEST | Update | - |
| article html file updated | 22 March 2019 00:27 CET | Update | - |
| article html file updated | 20 August 2015 17:44 CEST | Update | - |
| article html file updated | 11 October 2014 03:20 CEST | Original file | - |
| article xml file uploaded | 11 October 2014 03:20 CEST | Original file | https://www.mdpi.com/2218-1989/4/3/751/xml |
| article pdf uploaded. | 5 September 2014 14:27 CEST | Version of Record | https://www.mdpi.com/2218-1989/4/3/751/pdf |
