| article html file updated | 31 August 2025 17:30 CEST | Update | https://www.mdpi.com/2223-7747/9/4/509 |
| article html file updated | 21 July 2022 01:59 CEST | Update | - |
| article html file updated | 9 May 2020 04:34 CEST | Update | - |
| article html file updated | 24 April 2020 07:50 CEST | Original file | - |
| article pdf uploaded. | 24 April 2020 07:49 CEST | Updated version of record | https://www.mdpi.com/2223-7747/9/4/509/pdf |
| article xml uploaded. | 24 April 2020 07:49 CEST | Update | https://www.mdpi.com/2223-7747/9/4/509/xml |
| article xml file uploaded | 24 April 2020 07:49 CEST | Update | - |
| article supplementary file uploaded. | 15 April 2020 15:47 CEST | - | https://www.mdpi.com/2223-7747/9/4/509#supplementary |
| article pdf uploaded. | 15 April 2020 15:47 CEST | Version of Record | https://www.mdpi.com/2223-7747/9/4/509/pdf-vor |
| article xml file uploaded | 15 April 2020 15:47 CEST | Original file | - |
