| article html file updated | 8 February 2020 03:28 CET | Update | https://www.mdpi.com/2072-6694/9/4/33 |
| article html file updated | 24 September 2019 07:02 CEST | Update | - |
| article html file updated | 4 May 2019 02:26 CEST | Update | - |
| article html file updated | 28 April 2017 05:34 CEST | Update | - |
| article html file updated | 12 April 2017 14:51 CEST | Original file | - |
| article xml uploaded. | 12 April 2017 14:50 CEST | Original file | https://www.mdpi.com/2072-6694/9/4/33/xml |
| article pdf uploaded. | 12 April 2017 14:50 CEST | Version of Record | https://www.mdpi.com/2072-6694/9/4/33/pdf |
