| article html file updated | 6 February 2020 22:20 CET | Update | https://www.mdpi.com/1996-1073/8/9/9464 |
| article html file updated | 6 May 2019 12:18 CEST | Update | - |
| article html file updated | 26 March 2019 09:51 CET | Update | - |
| article html file updated | 12 October 2015 10:31 CEST | Original file | - |
| article xml file uploaded | 12 October 2015 10:31 CEST | Original file | https://www.mdpi.com/1996-1073/8/9/9464/xml |
| article pdf uploaded. | 8 September 2015 09:34 CEST | Updated version of record | https://www.mdpi.com/1996-1073/8/9/9464/pdf |
| article pdf uploaded. | 1 September 2015 10:44 CEST | Version of Record | https://www.mdpi.com/1996-1073/8/9/9464/pdf-vor |
