| article html file updated | 29 August 2025 22:38 CEST | Update | https://www.mdpi.com/1996-1073/9/2/70 |
| article html file updated | 16 July 2022 01:40 CEST | Update | - |
| article html file updated | 7 February 2020 03:51 CET | Update | - |
| article html file updated | 6 May 2019 01:47 CEST | Update | - |
| article html file updated | 26 March 2019 19:18 CET | Original file | - |
| article pdf uploaded. | 26 January 2016 08:19 CET | Version of Record | https://www.mdpi.com/1996-1073/9/2/70/pdf |
| article xml uploaded. | 26 January 2016 08:19 CET | Original file | https://www.mdpi.com/1996-1073/9/2/70/xml |
