| article html file updated | 30 August 2025 00:41 CEST | Update | https://www.mdpi.com/2073-4441/9/4/281 |
| article html file updated | 21 August 2025 19:18 CEST | Update | N/A |
| article html file updated | 8 February 2020 03:44 CET | Update | N/A |
| article html file updated | 24 September 2019 08:37 CEST | Update | N/A |
| article html file updated | 4 May 2019 01:56 CEST | Update | N/A |
| article html file updated | 28 April 2017 11:29 CEST | Update | N/A |
| article html file updated | 17 April 2017 17:26 CEST | Original file | N/A |
| article xml uploaded. | 17 April 2017 17:25 CEST | Original file | https://www.mdpi.com/2073-4441/9/4/281/xml |
| article pdf uploaded. | 17 April 2017 17:25 CEST | Updated version of record | https://www.mdpi.com/2073-4441/9/4/281/pdf |
