| article html file updated | 6 February 2020 14:17 CET | Update | https://www.mdpi.com/1999-4915/6/12/4926 |
| article html file updated | 7 May 2019 04:17 CEST | Update | N/A |
| article html file updated | 25 March 2019 18:57 CET | Update | N/A |
| article html file updated | 21 August 2015 03:44 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/1999-4915/6/12/4926/xml |
| article pdf uploaded. | 9 December 2014 10:12 CET | Version of Record | https://www.mdpi.com/1999-4915/6/12/4926/pdf |
