| article html file updated | 29 August 2025 22:54 CEST | Update | https://www.mdpi.com/1420-3049/21/4/439 |
| article html file updated | 16 July 2022 02:06 CEST | Update | N/A |
| article html file updated | 7 February 2020 06:42 CET | Update | N/A |
| article html file updated | 21 September 2019 14:21 CEST | Update | N/A |
| article html file updated | 5 May 2019 19:50 CEST | Update | N/A |
| article html file updated | 27 March 2019 00:49 CET | Update | N/A |
| article html file updated | 17 September 2018 03:48 CEST | Update | N/A |
| article html file updated | 28 April 2016 11:37 CEST | Update | N/A |
| article html file updated | 31 March 2016 14:03 CEST | Original file | N/A |
| article xml uploaded. | 31 March 2016 14:02 CEST | Original file | https://www.mdpi.com/1420-3049/21/4/439/xml |
| article pdf uploaded. | 31 March 2016 14:02 CEST | Version of Record | https://www.mdpi.com/1420-3049/21/4/439/pdf |