| article html file updated | 30 August 2025 00:13 CEST | Update | https://www.mdpi.com/2220-9964/6/1/13 |
| article html file updated | 16 July 2022 04:28 CEST | Update | - |
| article html file updated | 7 February 2020 21:18 CET | Update | - |
| article html file updated | 22 September 2019 20:30 CEST | Update | - |
| article html file updated | 4 May 2019 15:40 CEST | Update | - |
| article html file updated | 8 February 2017 08:51 CET | Update | - |
| article html file updated | 12 January 2017 09:32 CET | Original file | - |
| article xml uploaded. | 12 January 2017 09:30 CET | Update | https://www.mdpi.com/2220-9964/6/1/13/xml |
| article xml uploaded. | 12 January 2017 09:30 CET | Original file | - |
| article pdf uploaded. | 12 January 2017 09:30 CET | Version of Record | https://www.mdpi.com/2220-9964/6/1/13/pdf |
