| article html file updated | 6 February 2020 03:53 CET | Update | https://www.mdpi.com/1996-1944/6/8/3598 |
| article html file updated | 8 May 2019 01:31 CEST | Update | N/A |
| article html file updated | 21 March 2019 03:15 CET | Update | N/A |
| article html file updated | 15 March 2017 05:24 CET | Original file | N/A |
| article pdf uploaded. | 19 August 2013 17:02 CEST | Version of Record | https://www.mdpi.com/1996-1944/6/8/3598/pdf |
