| article html file updated | 31 August 2025 14:24 CEST | Update | https://www.mdpi.com/1422-0067/21/6/1981 |
| article html file updated | 20 July 2022 22:53 CEST | Update | - |
| article html file updated | 2 April 2020 02:13 CEST | Update | - |
| article html file updated | 14 March 2020 11:35 CET | Original file | - |
| article pdf uploaded. | 14 March 2020 11:34 CET | Updated version of record | https://www.mdpi.com/1422-0067/21/6/1981/pdf |
| article xml uploaded. | 14 March 2020 11:34 CET | Update | https://www.mdpi.com/1422-0067/21/6/1981/xml |
| article xml file uploaded | 14 March 2020 11:34 CET | Update | - |
| article pdf uploaded. | 13 March 2020 15:58 CET | Version of Record | https://www.mdpi.com/1422-0067/21/6/1981/pdf-vor |
| article xml file uploaded | 13 March 2020 15:58 CET | Original file | - |
