| article html file updated | 17 August 2026 07:14 CEST | Update | https://www.mdpi.com/2220-9964/9/4/206 |
| article html file updated | 31 August 2025 15:47 CEST | Update | N/A |
| article html file updated | 21 July 2022 00:16 CEST | Update | N/A |
| article html file updated | 7 April 2020 15:31 CEST | Original file | N/A |
| article pdf uploaded. | 7 April 2020 15:29 CEST | Updated version of record | https://www.mdpi.com/2220-9964/9/4/206/pdf |
| article xml uploaded. | 7 April 2020 15:29 CEST | Update | https://www.mdpi.com/2220-9964/9/4/206/xml |
| article xml file uploaded | 7 April 2020 15:29 CEST | Update | N/A |
| article pdf uploaded. | 28 March 2020 15:24 CET | Version of Record | https://www.mdpi.com/2220-9964/9/4/206/pdf-vor |
| article xml file uploaded | 28 March 2020 15:24 CET | Original file | N/A |
