| article html file updated | 31 August 2025 17:34 CEST | Update | https://www.mdpi.com/2076-3921/9/4/321 |
| article html file updated | 21 July 2022 02:02 CEST | Update | N/A |
| article html file updated | 17 April 2020 04:22 CEST | Update | N/A |
| article pdf uploaded. | 17 April 2020 04:21 CEST | Updated version of record | https://www.mdpi.com/2076-3921/9/4/321/pdf |
| article xml uploaded. | 17 April 2020 04:21 CEST | Update | https://www.mdpi.com/2076-3921/9/4/321/xml |
| article xml file uploaded | 17 April 2020 04:21 CEST | Update | N/A |
| article html file updated | 16 April 2020 10:56 CEST | Original file | N/A |
| article pdf uploaded. | 16 April 2020 10:55 CEST | Version of Record | https://www.mdpi.com/2076-3921/9/4/321/pdf-vor |
| article xml file uploaded | 16 April 2020 10:55 CEST | Original file | N/A |
