| article html file updated | 30 August 2025 00:16 CEST | Update | https://www.mdpi.com/2071-1050/9/1/135 |
| article html file updated | 16 July 2022 04:37 CEST | Update | N/A |
| article html file updated | 7 February 2020 22:01 CET | Update | N/A |
| article html file updated | 23 September 2019 00:26 CEST | Update | N/A |
| article html file updated | 4 May 2019 13:59 CEST | Update | N/A |
| article html file updated | 7 February 2017 10:20 CET | Update | N/A |
| article html file updated | 23 January 2017 09:44 CET | Original file | N/A |
| article xml uploaded. | 23 January 2017 09:43 CET | Update | https://www.mdpi.com/2071-1050/9/1/135/xml |
| article xml uploaded. | 23 January 2017 09:43 CET | Original file | N/A |
| article pdf uploaded. | 23 January 2017 09:43 CET | Version of Record | https://www.mdpi.com/2071-1050/9/1/135/pdf |
