| article html file updated | 29 August 2025 22:55 CEST | Update | https://www.mdpi.com/1420-3049/21/4/440 |
| article html file updated | 20 August 2025 22:17 CEST | Update | - |
| article html file updated | 16 July 2022 02:06 CEST | Update | - |
| article html file updated | 7 February 2020 06:43 CET | Update | - |
| article html file updated | 21 September 2019 14:22 CEST | Update | - |
| article html file updated | 5 May 2019 19:47 CEST | Update | - |
| article html file updated | 27 March 2019 00:51 CET | Update | - |
| article html file updated | 17 September 2018 03:48 CEST | Update | - |
| article html file updated | 28 April 2016 11:37 CEST | Update | - |
| article html file updated | 1 April 2016 13:20 CEST | Original file | - |
| article xml uploaded. | 1 April 2016 13:19 CEST | Original file | https://www.mdpi.com/1420-3049/21/4/440/xml |
| article pdf uploaded. | 1 April 2016 13:19 CEST | Version of Record | https://www.mdpi.com/1420-3049/21/4/440/pdf |
