| article html file updated | 1 September 2025 17:06 CEST | Update | https://www.mdpi.com/1999-4907/12/1/21 |
| article html file updated | 23 July 2022 07:42 CEST | Update | - |
| article html file updated | 28 December 2020 08:07 CET | Update | - |
| article pdf uploaded. | 28 December 2020 08:05 CET | Updated version of record | https://www.mdpi.com/1999-4907/12/1/21/pdf |
| article xml uploaded. | 28 December 2020 08:05 CET | Update | https://www.mdpi.com/1999-4907/12/1/21/xml |
| article xml file uploaded | 28 December 2020 08:05 CET | Update | - |
| article html file updated | 27 December 2020 10:57 CET | Original file | - |
| article supplementary file uploaded. | 27 December 2020 10:56 CET | - | https://www.mdpi.com/1999-4907/12/1/21#supplementary |
| article pdf uploaded. | 27 December 2020 10:56 CET | Version of Record | https://www.mdpi.com/1999-4907/12/1/21/pdf-vor |
| article xml uploaded. | 27 December 2020 10:56 CET | Update | - |
| article xml file uploaded | 27 December 2020 10:56 CET | Original file | - |
