| article html file updated | 30 August 2025 00:03 CEST | Update | https://www.mdpi.com/1420-3049/21/12/1721 |
| article html file updated | 16 July 2022 04:10 CEST | Update | - |
| article html file updated | 7 February 2020 19:42 CET | Update | - |
| article html file updated | 22 September 2019 11:59 CEST | Update | - |
| article html file updated | 4 May 2019 19:00 CEST | Update | - |
| article html file updated | 17 September 2018 13:30 CEST | Update | - |
| article html file updated | 27 December 2016 12:11 CET | Update | - |
| article html file updated | 15 December 2016 14:01 CET | Original file | - |
| article xml uploaded. | 15 December 2016 14:00 CET | Original file | https://www.mdpi.com/1420-3049/21/12/1721/xml |
| article pdf uploaded. | 15 December 2016 14:00 CET | Version of Record | https://www.mdpi.com/1420-3049/21/12/1721/pdf |