| article html file updated | 6 February 2020 14:13 CET | Update | https://www.mdpi.com/1999-4915/6/12/4856 |
| article html file updated | 7 May 2019 04:25 CEST | Update | N/A |
| article html file updated | 25 March 2019 18:51 CET | Update | N/A |
| article html file updated | 21 August 2015 03:34 CEST | Update | N/A |
| article html file updated | 26 December 2014 11:32 CET | Original file | N/A |
| article xml file uploaded | 26 December 2014 11:32 CET | Original file | https://www.mdpi.com/1999-4915/6/12/4856/xml |
| article pdf uploaded. | 5 December 2014 14:18 CET | Version of Record | https://www.mdpi.com/1999-4915/6/12/4856/pdf |
