| article html file updated | 30 August 2025 01:30 CEST | Update | https://www.mdpi.com/2227-7102/7/4/81 |
| article html file updated | 16 July 2022 07:00 CEST | Update | N/A |
| article html file updated | 8 February 2020 19:20 CET | Update | N/A |
| article html file updated | 2 May 2019 19:16 CEST | Update | N/A |
| article html file updated | 2 January 2018 11:22 CET | Update | N/A |
| article html file updated | 24 October 2017 12:58 CEST | Original file | N/A |
| article xml uploaded. | 24 October 2017 12:57 CEST | Original file | https://www.mdpi.com/2227-7102/7/4/81/xml |
| article pdf uploaded. | 24 October 2017 12:57 CEST | Version of Record | https://www.mdpi.com/2227-7102/7/4/81/pdf |
