| article html file updated | 31 August 2025 16:46 CEST | Update | https://www.mdpi.com/2227-9059/8/4/81 |
| article html file updated | 21 July 2022 01:16 CEST | Update | N/A |
| article html file updated | 8 May 2020 12:30 CEST | Update | N/A |
| article html file updated | 9 April 2020 04:34 CEST | Update | N/A |
| article pdf uploaded. | 9 April 2020 04:33 CEST | Updated version of record | https://www.mdpi.com/2227-9059/8/4/81/pdf |
| article xml uploaded. | 9 April 2020 04:33 CEST | Update | https://www.mdpi.com/2227-9059/8/4/81/xml |
| article xml file uploaded | 9 April 2020 04:33 CEST | Update | N/A |
| article html file updated | 8 April 2020 11:15 CEST | Original file | N/A |
| article pdf uploaded. | 8 April 2020 11:13 CEST | Version of Record | https://www.mdpi.com/2227-9059/8/4/81/pdf-vor |
| article xml file uploaded | 8 April 2020 11:13 CEST | Original file | N/A |
