| article html file updated | 29 August 2025 22:56 CEST | Update | https://www.mdpi.com/1420-3049/21/4/452 |
| article html file updated | 20 August 2025 22:17 CEST | Update | N/A |
| article html file updated | 7 February 2020 06:54 CET | Update | N/A |
| article html file updated | 21 September 2019 14:35 CEST | Update | N/A |
| article html file updated | 5 May 2019 19:26 CEST | Update | N/A |
| article html file updated | 27 March 2019 01:10 CET | Update | N/A |
| article html file updated | 17 September 2018 03:53 CEST | Update | N/A |
| article html file updated | 28 April 2016 11:41 CEST | Update | N/A |
| article html file updated | 6 April 2016 14:17 CEST | Original file | N/A |
| article xml uploaded. | 6 April 2016 14:15 CEST | Original file | https://www.mdpi.com/1420-3049/21/4/452/xml |
| article pdf uploaded. | 6 April 2016 14:15 CEST | Version of Record | https://www.mdpi.com/1420-3049/21/4/452/pdf |