| article html file updated | 29 August 2025 22:10 CEST | Update | https://www.mdpi.com/2073-4336/6/4/413 |
| article html file updated | 20 August 2025 22:02 CEST | Update | - |
| article html file updated | 6 February 2020 23:21 CET | Update | - |
| article html file updated | 6 May 2019 10:13 CEST | Update | - |
| article html file updated | 26 March 2019 11:47 CET | Original file | - |
| article pdf uploaded. | 29 September 2015 14:48 CEST | Version of Record | https://www.mdpi.com/2073-4336/6/4/413/pdf |
