| article html file updated | 31 August 2025 14:27 CEST | Update | https://www.mdpi.com/1422-0067/21/6/1990 |
| article html file updated | 20 July 2022 22:56 CEST | Update | - |
| article html file updated | 2 April 2020 02:18 CEST | Update | - |
| article html file updated | 14 March 2020 11:24 CET | Original file | - |
| article pdf uploaded. | 14 March 2020 11:22 CET | Version of Record | https://www.mdpi.com/1422-0067/21/6/1990/pdf |
| article xml uploaded. | 14 March 2020 11:22 CET | Update | https://www.mdpi.com/1422-0067/21/6/1990/xml |
| article xml file uploaded | 14 March 2020 11:22 CET | Original file | - |
