| article html file updated | 8 February 2020 04:15 CET | Update | https://www.mdpi.com/2073-4360/9/4/151 |
| article html file updated | 24 September 2019 11:33 CEST | Update | - |
| article html file updated | 4 May 2019 01:00 CEST | Update | - |
| article html file updated | 18 March 2019 05:38 CET | Update | - |
| article html file updated | 28 April 2017 10:41 CEST | Update | - |
| article html file updated | 23 April 2017 13:22 CEST | Original file | - |
| article xml uploaded. | 23 April 2017 13:21 CEST | Update | https://www.mdpi.com/2073-4360/9/4/151/xml |
| article pdf uploaded. | 23 April 2017 13:21 CEST | Version of Record | https://www.mdpi.com/2073-4360/9/4/151/pdf |
