| article html file updated | 12 August 2026 19:37 CEST | Update | https://www.mdpi.com/1996-1944/6/7/2723 |
| article html file updated | 6 February 2020 03:07 CET | Update | N/A |
| article html file updated | 8 May 2019 03:03 CEST | Update | N/A |
| article html file updated | 21 March 2019 01:02 CET | Update | N/A |
| article html file updated | 4 February 2017 05:40 CET | Original file | N/A |
| article pdf uploaded. | 22 July 2013 09:02 CEST | Updated version of record | https://www.mdpi.com/1996-1944/6/7/2723/pdf |
| article pdf uploaded. | 10 July 2013 12:29 CEST | Version of Record | https://www.mdpi.com/1996-1944/6/7/2723/pdf-vor |
