| article html file updated | 8 February 2020 08:10 CET | Update | https://www.mdpi.com/2073-4441/9/6/427 |
| article html file updated | 25 September 2019 07:46 CEST | Update | - |
| article html file updated | 3 May 2019 17:40 CEST | Update | - |
| article html file updated | 29 June 2017 12:17 CEST | Update | - |
| article html file updated | 20 June 2017 13:52 CEST | Update | - |
| article xml uploaded. | 20 June 2017 13:51 CEST | Update | https://www.mdpi.com/2073-4441/9/6/427/xml |
| article pdf uploaded. | 20 June 2017 13:51 CEST | Updated version of record | https://www.mdpi.com/2073-4441/9/6/427/pdf |
| article html file updated | 13 June 2017 13:50 CEST | Original file | - |
| article pdf uploaded. | 13 June 2017 13:49 CEST | Version of Record | https://www.mdpi.com/2073-4441/9/6/427/pdf-vor |
