| article html file updated | 8 February 2020 02:59 CET | Update | https://www.mdpi.com/2073-4433/8/4/71 |
| article html file updated | 24 September 2019 04:26 CEST | Update | - |
| article html file updated | 4 May 2019 03:24 CEST | Update | - |
| article html file updated | 28 April 2017 05:30 CEST | Update | - |
| article html file updated | 6 April 2017 03:20 CEST | Original file | - |
| article xml uploaded. | 6 April 2017 03:19 CEST | Original file | https://www.mdpi.com/2073-4433/8/4/71/xml |
| article pdf uploaded. | 6 April 2017 03:19 CEST | Version of Record | https://www.mdpi.com/2073-4433/8/4/71/pdf |
