| article html file updated | 6 February 2020 19:00 CET | Update | https://www.mdpi.com/2071-1050/7/6/6553 |
| article html file updated | 6 May 2019 19:14 CEST | Update | - |
| article html file updated | 26 March 2019 03:25 CET | Update | - |
| article html file updated | 21 August 2015 12:36 CEST | Update | - |
| article html file updated | 8 July 2015 09:59 CEST | Original file | - |
| article xml file uploaded | 8 July 2015 09:59 CEST | Original file | https://www.mdpi.com/2071-1050/7/6/6553/xml |
| article pdf uploaded. | 26 May 2015 13:21 CEST | Version of Record | https://www.mdpi.com/2071-1050/7/6/6553/pdf |
