| article html file updated | 6 February 2020 04:06 CET | Update | https://www.mdpi.com/1660-4601/10/9/4027 |
| article html file updated | 8 May 2019 01:01 CEST | Update | - |
| article html file updated | 21 March 2019 03:54 CET | Update | - |
| article html file updated | 17 June 2015 12:49 CEST | Update | - |
| article html file updated | 25 October 2013 09:25 CEST | Original file | - |
| article xml file uploaded | 25 October 2013 09:25 CEST | Original file | https://www.mdpi.com/1660-4601/10/9/4027/xml |
| article pdf uploaded. | 30 August 2013 15:33 CEST | Version of Record | https://www.mdpi.com/1660-4601/10/9/4027/pdf |
