| article html file updated | 30 August 2025 11:57 CEST | Update | https://www.mdpi.com/2220-9964/8/2/81 |
| article html file updated | 19 July 2022 04:26 CEST | Update | - |
| article html file updated | 11 February 2020 15:42 CET | Update | - |
| article html file updated | 14 October 2019 22:02 CEST | Update | - |
| article html file updated | 26 April 2019 17:27 CEST | Update | - |
| article html file updated | 12 April 2019 13:23 CEST | Update | - |
| article html file updated | 3 April 2019 19:39 CEST | Update | - |
| article html file updated | 1 March 2019 11:23 CET | Update | - |
| article html file updated | 28 February 2019 22:52 CET | Update | - |
| article html file updated | 13 February 2019 12:34 CET | Original file | - |
| article pdf uploaded. | 13 February 2019 12:32 CET | Version of Record | https://www.mdpi.com/2220-9964/8/2/81/pdf |
| article xml uploaded. | 13 February 2019 12:32 CET | Update | https://www.mdpi.com/2220-9964/8/2/81/xml |
| article xml file uploaded | 13 February 2019 12:32 CET | Original file | - |
