| article html file updated | 29 August 2025 20:42 CEST | Update | https://www.mdpi.com/1999-4915/5/7/1684 |
| article html file updated | 15 July 2022 22:24 CEST | Update | N/A |
| article html file updated | 6 February 2020 03:07 CET | Update | N/A |
| article html file updated | 19 September 2019 22:39 CEST | Update | N/A |
| article html file updated | 8 May 2019 03:01 CEST | Update | N/A |
| article html file updated | 21 March 2019 01:04 CET | Update | N/A |
| article html file updated | 17 June 2015 11:09 CEST | Update | N/A |
| article html file updated | 9 August 2013 12:00 CEST | Original file | N/A |
| article xml file uploaded | 9 August 2013 12:00 CEST | Original file | https://www.mdpi.com/1999-4915/5/7/1684/xml |
| article pdf uploaded. | 11 July 2013 11:46 CEST | Version of Record | https://www.mdpi.com/1999-4915/5/7/1684/pdf |