| article html file updated | 29 August 2025 22:59 CEST | Update | https://www.mdpi.com/2072-6643/8/4/224 |
| article html file updated | 20 August 2025 22:18 CEST | Update | - |
| article html file updated | 7 February 2020 07:28 CET | Update | - |
| article html file updated | 5 May 2019 18:13 CEST | Update | - |
| article html file updated | 27 March 2019 02:17 CET | Update | - |
| article html file updated | 28 April 2016 09:27 CEST | Update | - |
| article html file updated | 19 April 2016 15:10 CEST | Original file | - |
| article xml uploaded. | 19 April 2016 15:09 CEST | Original file | https://www.mdpi.com/2072-6643/8/4/224/xml |
| article pdf uploaded. | 19 April 2016 15:09 CEST | Version of Record | https://www.mdpi.com/2072-6643/8/4/224/pdf |