| article html file updated | 29 August 2025 21:11 CEST | Update | https://www.mdpi.com/2227-9067/1/2/74 |
| article html file updated | 15 July 2022 23:18 CEST | Update | N/A |
| article html file updated | 6 February 2020 11:24 CET | Update | N/A |
| article html file updated | 20 September 2019 11:33 CEST | Update | N/A |
| article html file updated | 7 May 2019 09:52 CEST | Update | N/A |
| article html file updated | 21 March 2019 22:55 CET | Update | N/A |
| article html file updated | 20 August 2015 15:10 CEST | Original file | N/A |
| article pdf uploaded. | 12 August 2014 15:21 CEST | Version of Record | https://www.mdpi.com/2227-9067/1/2/74/pdf |
