| article html file updated | 29 August 2025 21:00 CEST | Update | https://www.mdpi.com/2218-1989/4/2/142 |
| article html file updated | 15 July 2022 22:57 CEST | Update | N/A |
| article html file updated | 6 February 2020 08:16 CET | Update | N/A |
| article html file updated | 7 May 2019 16:35 CEST | Update | N/A |
| article html file updated | 21 March 2019 14:45 CET | Update | N/A |
| article html file updated | 20 August 2015 01:43 CEST | Update | N/A |
| article html file updated | 18 July 2014 03:58 CEST | Original file | N/A |
| article xml file uploaded | 18 July 2014 03:58 CEST | Original file | https://www.mdpi.com/2218-1989/4/2/142/xml |
| article pdf uploaded. | 3 April 2014 09:42 CEST | Updated version of record | https://www.mdpi.com/2218-1989/4/2/142/pdf |
| article pdf uploaded. | 1 April 2014 16:03 CEST | Updated version of record | https://www.mdpi.com/2218-1989/4/2/142/pdf-vor |
| article pdf uploaded. | 31 March 2014 11:21 CEST | Version of Record | https://www.mdpi.com/2218-1989/4/2/142/pdf-vor |
