| article html file updated | 6 February 2020 00:46 CET | Update | https://www.mdpi.com/1996-1073/6/3/1233 |
| article html file updated | 8 May 2019 07:51 CEST | Update | - |
| article html file updated | 20 March 2019 19:12 CET | Update | - |
| article html file updated | 18 January 2017 06:40 CET | Original file | - |
| article pdf uploaded. | 1 March 2013 16:51 CET | Version of Record | https://www.mdpi.com/1996-1073/6/3/1233/pdf |
