| article html file updated | 6 February 2020 23:02 CET | Update | https://www.mdpi.com/1996-1073/8/9/10409 |
| article html file updated | 6 May 2019 10:50 CEST | Update | - |
| article html file updated | 26 March 2019 11:12 CET | Update | - |
| article html file updated | 12 October 2015 10:32 CEST | Original file | - |
| article xml file uploaded | 12 October 2015 10:32 CEST | Original file | https://www.mdpi.com/1996-1073/8/9/10409/xml |
| article pdf uploaded. | 21 September 2015 13:08 CEST | Version of Record | https://www.mdpi.com/1996-1073/8/9/10409/pdf |
