| article html file updated | 30 August 2025 00:13 CEST | Update | https://www.mdpi.com/2072-6643/9/1/68 |
| article html file updated | 16 July 2022 04:30 CEST | Update | - |
| article html file updated | 7 February 2020 21:26 CET | Update | - |
| article html file updated | 22 September 2019 21:13 CEST | Update | - |
| article html file updated | 4 May 2019 15:21 CEST | Update | - |
| article html file updated | 7 February 2017 12:29 CET | Update | - |
| article html file updated | 13 January 2017 13:18 CET | Original file | - |
| article xml uploaded. | 13 January 2017 13:17 CET | Update | https://www.mdpi.com/2072-6643/9/1/68/xml |
| article xml uploaded. | 13 January 2017 13:17 CET | Original file | - |
| article pdf uploaded. | 13 January 2017 13:17 CET | Version of Record | https://www.mdpi.com/2072-6643/9/1/68/pdf |
