| article html file updated | 29 August 2025 21:18 CEST | Update | https://www.mdpi.com/2304-6740/2/4/556 |
| article html file updated | 20 August 2025 21:55 CEST | Update | - |
| article html file updated | 6 February 2020 13:07 CET | Update | - |
| article html file updated | 7 May 2019 06:33 CEST | Update | - |
| article html file updated | 25 March 2019 16:32 CET | Original file | - |
| article pdf uploaded. | 24 October 2014 16:55 CEST | Version of Record | https://www.mdpi.com/2304-6740/2/4/556/pdf |
