| article html file updated | 31 August 2025 03:51 CEST | Update | https://www.mdpi.com/2227-7102/9/4/264 |
| article html file updated | 20 July 2022 00:32 CEST | Update | N/A |
| article html file updated | 14 February 2020 05:42 CET | Update | N/A |
| article html file updated | 13 November 2019 08:59 CET | Original file | N/A |
| article pdf uploaded. | 13 November 2019 08:58 CET | Updated version of record | https://www.mdpi.com/2227-7102/9/4/264/pdf |
| article xml uploaded. | 13 November 2019 08:58 CET | Update | https://www.mdpi.com/2227-7102/9/4/264/xml |
| article xml file uploaded | 13 November 2019 08:58 CET | Update | N/A |
| article pdf uploaded. | 31 October 2019 16:53 CET | Version of Record | https://www.mdpi.com/2227-7102/9/4/264/pdf-vor |
| article xml file uploaded | 31 October 2019 16:53 CET | Original file | N/A |
