| article html file updated | 7 February 2020 16:32 CET | Update | https://www.mdpi.com/1424-8247/9/4/63 |
| article html file updated | 22 September 2019 03:14 CEST | Update | - |
| article html file updated | 5 May 2019 01:19 CEST | Update | - |
| article html file updated | 27 October 2017 10:44 CEST | Update | - |
| article html file updated | 29 December 2016 11:49 CET | Update | - |
| article html file updated | 18 October 2016 09:37 CEST | Original file | - |
| article xml uploaded. | 18 October 2016 09:36 CEST | Update | https://www.mdpi.com/1424-8247/9/4/63/xml |
| article xml uploaded. | 18 October 2016 09:36 CEST | Original file | - |
| article pdf uploaded. | 18 October 2016 09:36 CEST | Version of Record | https://www.mdpi.com/1424-8247/9/4/63/pdf |
