| article html file updated | 6 February 2020 03:33 CET | Update | https://www.mdpi.com/1996-1944/6/8/3241 |
| article html file updated | 8 May 2019 02:14 CEST | Update | - |
| article html file updated | 21 March 2019 02:16 CET | Update | - |
| article html file updated | 17 February 2017 06:53 CET | Original file | - |
| article pdf uploaded. | 31 July 2013 14:42 CEST | Version of Record | https://www.mdpi.com/1996-1944/6/8/3241/pdf |
