| article html file updated | 6 February 2020 06:05 CET | Update | https://www.mdpi.com/1660-4601/10/12/6920 |
| article html file updated | 7 May 2019 21:04 CEST | Update | - |
| article html file updated | 21 March 2019 09:06 CET | Update | - |
| article html file updated | 19 August 2015 13:08 CEST | Update | - |
| article html file updated | 7 January 2014 13:18 CET | Original file | - |
| article xml file uploaded | 7 January 2014 13:18 CET | Original file | https://www.mdpi.com/1660-4601/10/12/6920/xml |
| article pdf uploaded. | 10 December 2013 13:52 CET | Version of Record | https://www.mdpi.com/1660-4601/10/12/6920/pdf |
