| article html file updated | 29 August 2025 20:52 CEST | Update | https://www.mdpi.com/2076-3905/2/4/304 |
| article html file updated | 15 July 2022 22:44 CEST | Update | N/A |
| article html file updated | 6 February 2020 05:59 CET | Update | N/A |
| article html file updated | 21 March 2019 08:51 CET | Update | N/A |
| article html file updated | 11 July 2016 09:57 CEST | Update | N/A |
| article html file updated | 19 August 2015 12:23 CEST | Original file | N/A |
| article pdf uploaded. | 5 December 2013 09:17 CET | Version of Record | https://www.mdpi.com/2076-3905/2/4/304/pdf |
