| article html file updated | 30 August 2025 00:04 CEST | Update | https://www.mdpi.com/1424-8247/9/4/78 |
| article html file updated | 16 July 2022 04:11 CEST | Update | - |
| article html file updated | 7 February 2020 19:46 CET | Update | - |
| article html file updated | 22 September 2019 12:19 CEST | Update | - |
| article html file updated | 4 May 2019 18:53 CEST | Update | - |
| article html file updated | 27 October 2017 10:44 CEST | Update | - |
| article html file updated | 29 December 2016 11:51 CET | Update | - |
| article html file updated | 16 December 2016 10:35 CET | Original file | - |
| article xml uploaded. | 16 December 2016 10:34 CET | Original file | https://www.mdpi.com/1424-8247/9/4/78/xml |
| article pdf uploaded. | 16 December 2016 10:34 CET | Version of Record | https://www.mdpi.com/1424-8247/9/4/78/pdf |