| article html file updated | 30 August 2025 00:43 CEST | Update | https://www.mdpi.com/2227-9067/4/7/57 |
| article html file updated | 21 August 2025 19:20 CEST | Update | N/A |
| article html file updated | 8 February 2020 10:27 CET | Update | N/A |
| article html file updated | 25 September 2019 19:50 CEST | Update | N/A |
| article html file updated | 3 May 2019 13:25 CEST | Update | N/A |
| article html file updated | 28 July 2017 11:10 CEST | Update | N/A |
| article html file updated | 7 July 2017 15:43 CEST | Original file | N/A |
| article xml uploaded. | 7 July 2017 15:42 CEST | Original file | https://www.mdpi.com/2227-9067/4/7/57/xml |
| article pdf uploaded. | 7 July 2017 15:42 CEST | Version of Record | https://www.mdpi.com/2227-9067/4/7/57/pdf |
