| article html file updated | 24 December 2025 14:46 CET | Update | https://www.mdpi.com/2227-7102/9/2/87 |
| article html file updated | 30 August 2025 14:17 CEST | Update | N/A |
| article html file updated | 21 August 2025 20:45 CEST | Update | N/A |
| article html file updated | 12 February 2020 07:14 CET | Update | N/A |
| article html file updated | 18 October 2019 20:39 CEST | Update | N/A |
| article html file updated | 4 July 2019 17:55 CEST | Update | N/A |
| article html file updated | 30 April 2019 12:51 CEST | Original file | N/A |
| article pdf uploaded. | 30 April 2019 12:50 CEST | Updated version of record | https://www.mdpi.com/2227-7102/9/2/87/pdf |
| article xml uploaded. | 30 April 2019 12:50 CEST | Update | https://www.mdpi.com/2227-7102/9/2/87/xml |
| article xml file uploaded | 30 April 2019 12:50 CEST | Update | N/A |
| article pdf uploaded. | 23 April 2019 14:52 CEST | Version of Record | https://www.mdpi.com/2227-7102/9/2/87/pdf-vor |
| article xml file uploaded | 23 April 2019 14:52 CEST | Original file | N/A |
