| article html file updated | 6 February 2020 03:42 CET | Update | https://www.mdpi.com/1996-1073/6/8/4097 |
| article html file updated | 8 May 2019 01:55 CEST | Update | - |
| article html file updated | 21 March 2019 02:43 CET | Update | - |
| article html file updated | 20 July 2017 08:41 CEST | Update | - |
| article html file updated | 20 July 2017 08:40 CEST | Update | - |
| article html file updated | 20 July 2017 08:39 CEST | Original file | - |
| article xml uploaded. | 20 July 2017 08:38 CEST | Update | https://www.mdpi.com/1996-1073/6/8/4097/xml |
| article pdf uploaded. | 9 August 2013 16:46 CEST | Updated version of record | https://www.mdpi.com/1996-1073/6/8/4097/pdf |
| article pdf uploaded. | 9 August 2013 11:05 CEST | Version of Record | https://www.mdpi.com/1996-1073/6/8/4097/pdf-vor |
