| article html file updated | 29 August 2025 20:50 CEST | Update | https://www.mdpi.com/2077-0375/3/4/354 |
| article html file updated | 15 July 2022 22:40 CEST | Update | - |
| article html file updated | 6 February 2020 05:26 CET | Update | - |
| article html file updated | 7 May 2019 22:20 CEST | Update | - |
| article html file updated | 21 March 2019 07:22 CET | Update | - |
| article html file updated | 19 August 2015 09:15 CEST | Update | - |
| article html file updated | 18 March 2014 09:52 CET | Original file | - |
| article xml file uploaded | 18 March 2014 09:52 CET | Original file | https://www.mdpi.com/2077-0375/3/4/354/xml |
| article pdf uploaded. | 8 November 2013 16:56 CET | Version of Record | https://www.mdpi.com/2077-0375/3/4/354/pdf |
