| article html file updated | 29 August 2025 21:15 CEST | Update | https://www.mdpi.com/1999-4915/6/9/3612 |
| article html file updated | 15 July 2022 23:25 CEST | Update | - |
| article html file updated | 6 February 2020 12:26 CET | Update | - |
| article html file updated | 7 May 2019 07:54 CEST | Update | - |
| article html file updated | 22 March 2019 01:27 CET | Update | - |
| article html file updated | 20 August 2015 20:45 CEST | Update | - |
| article html file updated | 8 October 2014 08:17 CEST | Original file | - |
| article xml file uploaded | 8 October 2014 08:17 CEST | Original file | https://www.mdpi.com/1999-4915/6/9/3612/xml |
| article pdf uploaded. | 24 September 2014 12:07 CEST | Version of Record | https://www.mdpi.com/1999-4915/6/9/3612/pdf |
