| article html file updated | 6 February 2020 02:57 CET | Update | https://www.mdpi.com/1996-1944/6/7/2642 |
| article html file updated | 8 May 2019 03:22 CEST | Update | - |
| article html file updated | 21 March 2019 00:37 CET | Update | - |
| article html file updated | 14 February 2017 12:06 CET | Original file | - |
| article pdf uploaded. | 3 July 2013 09:58 CEST | Version of Record | https://www.mdpi.com/1996-1944/6/7/2642/pdf |
