| article html file updated | 29 August 2025 20:51 CEST | Update | https://www.mdpi.com/2076-328X/3/4/634 |
| article html file updated | 15 July 2022 22:42 CEST | Update | - |
| article html file updated | 6 February 2020 05:42 CET | Update | - |
| article html file updated | 20 September 2019 03:27 CEST | Update | - |
| article html file updated | 7 May 2019 21:49 CEST | Update | - |
| article html file updated | 21 March 2019 08:03 CET | Update | - |
| article html file updated | 19 August 2015 10:29 CEST | Update | - |
| article html file updated | 26 August 2014 03:57 CEST | Original file | - |
| article xml file uploaded | 26 August 2014 03:57 CEST | Original file | https://www.mdpi.com/2076-328X/3/4/634/xml |
| article pdf uploaded. | 25 November 2013 09:18 CET | Updated version of record | https://www.mdpi.com/2076-328X/3/4/634/pdf |
| article pdf uploaded. | 21 November 2013 14:47 CET | Version of Record | https://www.mdpi.com/2076-328X/3/4/634/pdf-vor |