| article html file updated | 24 December 2025 14:40 CET | Update | https://www.mdpi.com/2227-7072/7/2/21 |
| article html file updated | 30 August 2025 13:48 CEST | Update | N/A |
| article html file updated | 21 August 2025 20:36 CEST | Update | N/A |
| article html file updated | 12 February 2020 04:01 CET | Update | N/A |
| article html file updated | 18 October 2019 00:13 CEST | Update | N/A |
| article html file updated | 5 July 2019 22:12 CEST | Update | N/A |
| article html file updated | 8 May 2019 14:40 CEST | Original file | N/A |
| article pdf uploaded. | 8 May 2019 12:08 CEST | Updated version of record | https://www.mdpi.com/2227-7072/7/2/21/pdf |
| article xml uploaded. | 8 May 2019 12:08 CEST | Update | https://www.mdpi.com/2227-7072/7/2/21/xml |
| article xml file uploaded | 8 May 2019 12:08 CEST | Update | N/A |
| article pdf uploaded. | 9 April 2019 13:52 CEST | Version of Record | https://www.mdpi.com/2227-7072/7/2/21/pdf-vor |
| article xml file uploaded | 9 April 2019 13:52 CEST | Original file | N/A |
