| article html file updated | 29 August 2025 22:31 CEST | Update | https://www.mdpi.com/1420-3049/21/1/7 |
| article html file updated | 20 August 2025 22:09 CEST | Update | N/A |
| article html file updated | 7 February 2020 02:38 CET | Update | N/A |
| article html file updated | 21 September 2019 08:31 CEST | Update | N/A |
| article html file updated | 6 May 2019 04:08 CEST | Update | N/A |
| article html file updated | 26 March 2019 17:08 CET | Update | N/A |
| article html file updated | 12 November 2018 03:56 CET | Original file | N/A |
| article pdf uploaded. | 23 December 2015 12:39 CET | Version of Record | https://www.mdpi.com/1420-3049/21/1/7/pdf |
| article xml uploaded. | 23 December 2015 12:39 CET | Original file | https://www.mdpi.com/1420-3049/21/1/7/xml |
