| article html file updated | 30 August 2025 06:53 CEST | Update | https://www.mdpi.com/1660-4601/15/9/1991 |
| article html file updated | 17 July 2022 02:38 CEST | Update | - |
| article html file updated | 10 February 2020 10:40 CET | Update | - |
| article html file updated | 7 October 2019 19:20 CEST | Update | - |
| article html file updated | 29 April 2019 06:16 CEST | Update | - |
| article html file updated | 15 April 2019 01:55 CEST | Update | - |
| article html file updated | 31 March 2019 18:16 CEST | Update | - |
| article html file updated | 27 September 2018 12:19 CEST | Update | - |
| article html file updated | 13 September 2018 07:36 CEST | Original file | - |
| article pdf uploaded. | 13 September 2018 07:35 CEST | Version of Record | https://www.mdpi.com/1660-4601/15/9/1991/pdf |
| article xml uploaded. | 13 September 2018 07:35 CEST | Update | https://www.mdpi.com/1660-4601/15/9/1991/xml |
| article xml file uploaded | 13 September 2018 07:35 CEST | Original file | - |