| article html file updated | 13 August 2026 06:15 CEST | Update | https://www.mdpi.com/2227-9059/2/4/275 |
| article html file updated | 29 August 2025 21:19 CEST | Update | N/A |
| article html file updated | 20 August 2025 21:55 CEST | Update | N/A |
| article html file updated | 6 February 2020 13:18 CET | Update | N/A |
| article html file updated | 7 May 2019 06:11 CEST | Update | N/A |
| article html file updated | 25 March 2019 16:54 CET | Update | N/A |
| article html file updated | 23 February 2017 02:23 CET | Update | N/A |
| article html file updated | 21 August 2015 00:57 CEST | Original file | N/A |
| article pdf uploaded. | 31 October 2014 13:39 CET | Version of Record | https://www.mdpi.com/2227-9059/2/4/275/pdf |
