| article html file updated | 30 August 2025 10:11 CEST | Update | https://www.mdpi.com/2227-7102/9/1/2 |
| article html file updated | 17 July 2022 17:29 CEST | Update | N/A |
| article html file updated | 11 February 2020 04:24 CET | Update | N/A |
| article html file updated | 12 October 2019 06:28 CEST | Update | N/A |
| article html file updated | 27 April 2019 16:38 CEST | Update | N/A |
| article html file updated | 13 April 2019 12:29 CEST | Update | N/A |
| article html file updated | 10 April 2019 21:03 CEST | Update | N/A |
| article html file updated | 2 April 2019 16:29 CEST | Update | N/A |
| article html file updated | 20 December 2018 12:59 CET | Original file | N/A |
| article pdf uploaded. | 20 December 2018 12:58 CET | Version of Record | https://www.mdpi.com/2227-7102/9/1/2/pdf |
| article xml uploaded. | 20 December 2018 12:58 CET | Update | https://www.mdpi.com/2227-7102/9/1/2/xml |
| article xml file uploaded | 20 December 2018 12:58 CET | Original file | N/A |
