| article html file updated | 29 August 2025 20:50 CEST | Update | https://www.mdpi.com/2077-0383/2/4/220 |
| article html file updated | 15 July 2022 22:39 CEST | Update | - |
| article html file updated | 6 February 2020 05:19 CET | Update | - |
| article html file updated | 7 May 2019 22:34 CEST | Update | - |
| article html file updated | 21 March 2019 07:02 CET | Update | - |
| article html file updated | 25 June 2015 12:08 CEST | Update | - |
| article xml file uploaded | 25 June 2015 12:08 CEST | Update | https://www.mdpi.com/2077-0383/2/4/220/xml |
| article html file updated | 16 December 2014 04:50 CET | Update | - |
| article xml file uploaded | 16 December 2014 04:50 CET | Update | - |
| article html file updated | 10 December 2014 09:53 CET | Original file | - |
| article xml file uploaded | 10 December 2014 09:53 CET | Original file | - |
| article pdf uploaded. | 1 November 2013 13:58 CET | Version of Record | https://www.mdpi.com/2077-0383/2/4/220/pdf |
