| article html file updated | 8 February 2020 03:04 CET | Update | https://www.mdpi.com/2072-6651/9/4/131 |
| article html file updated | 24 September 2019 04:59 CEST | Update | - |
| article html file updated | 4 May 2019 03:13 CEST | Update | - |
| article html file updated | 28 April 2017 11:15 CEST | Update | - |
| article html file updated | 7 April 2017 14:05 CEST | Original file | - |
| article xml uploaded. | 7 April 2017 14:04 CEST | Original file | https://www.mdpi.com/2072-6651/9/4/131/xml |
| article pdf uploaded. | 7 April 2017 14:04 CEST | Version of Record | https://www.mdpi.com/2072-6651/9/4/131/pdf |
