| article html file updated | 6 February 2020 03:40 CET | Update | https://www.mdpi.com/1996-1944/6/8/3387 |
| article html file updated | 8 May 2019 01:58 CEST | Update | N/A |
| article html file updated | 21 March 2019 02:38 CET | Update | N/A |
| article html file updated | 13 February 2017 02:45 CET | Original file | N/A |
| article pdf uploaded. | 9 August 2013 16:52 CEST | Updated version of record | https://www.mdpi.com/1996-1944/6/8/3387/pdf |
| article pdf uploaded. | 8 August 2013 09:41 CEST | Version of Record | https://www.mdpi.com/1996-1944/6/8/3387/pdf-vor |
