| article html file updated | 31 August 2025 20:31 CEST | Update | https://www.mdpi.com/2226-471X/5/2/21 |
| article html file updated | 21 July 2022 04:56 CEST | Update | - |
| article html file updated | 18 June 2020 12:27 CEST | Original file | - |
| article pdf uploaded. | 18 June 2020 12:25 CEST | Updated version of record | https://www.mdpi.com/2226-471X/5/2/21/pdf |
| article xml uploaded. | 18 June 2020 12:25 CEST | Update | https://www.mdpi.com/2226-471X/5/2/21/xml |
| article xml file uploaded | 18 June 2020 12:25 CEST | Update | - |
| article pdf uploaded. | 15 May 2020 11:18 CEST | Updated version of record | https://www.mdpi.com/2226-471X/5/2/21/pdf-vor |
| article xml file uploaded | 15 May 2020 11:18 CEST | Update | - |
| article pdf uploaded. | 15 May 2020 11:18 CEST | Version of Record | https://www.mdpi.com/2226-471X/5/2/21/pdf-vor |
| article xml file uploaded | 15 May 2020 11:18 CEST | Original file | - |
