| article html file updated | 29 August 2025 21:26 CEST | Update | https://www.mdpi.com/2071-1050/7/1/271 |
| article html file updated | 15 July 2022 23:43 CEST | Update | - |
| article html file updated | 6 February 2020 14:49 CET | Update | - |
| article html file updated | 20 September 2019 16:28 CEST | Update | - |
| article html file updated | 7 May 2019 03:14 CEST | Update | - |
| article html file updated | 25 March 2019 19:52 CET | Update | - |
| article html file updated | 21 August 2015 04:57 CEST | Original file | - |
| article pdf uploaded. | 29 December 2014 12:26 CET | Version of Record | https://www.mdpi.com/2071-1050/7/1/271/pdf |
