| article html file updated | 8 February 2020 03:28 CET | Update | https://www.mdpi.com/2072-6651/9/4/135 |
| article html file updated | 24 September 2019 06:59 CEST | Update | - |
| article html file updated | 4 May 2019 02:27 CEST | Update | - |
| article html file updated | 28 April 2017 11:16 CEST | Update | - |
| article html file updated | 12 April 2017 13:30 CEST | Original file | - |
| article xml uploaded. | 12 April 2017 13:29 CEST | Update | https://www.mdpi.com/2072-6651/9/4/135/xml |
| article pdf uploaded. | 12 April 2017 13:29 CEST | Version of Record | https://www.mdpi.com/2072-6651/9/4/135/pdf |
