| article html file updated | 6 February 2020 03:18 CET | Update | https://www.mdpi.com/1996-1073/6/7/3571 |
| article html file updated | 8 May 2019 02:42 CEST | Update | - |
| article html file updated | 21 March 2019 01:34 CET | Update | - |
| article html file updated | 20 July 2017 11:38 CEST | Update | - |
| article html file updated | 20 July 2017 11:36 CEST | Update | - |
| article html file updated | 20 July 2017 11:34 CEST | Original file | - |
| article xml uploaded. | 20 July 2017 11:32 CEST | Original file | https://www.mdpi.com/1996-1073/6/7/3571/xml |
| article pdf uploaded. | 18 July 2013 16:24 CEST | Version of Record | https://www.mdpi.com/1996-1073/6/7/3571/pdf |
