| article html file updated | 8 February 2020 07:23 CET | Update | https://www.mdpi.com/2073-4441/9/6/399 |
| article html file updated | 25 September 2019 03:44 CEST | Update | - |
| article html file updated | 3 May 2019 19:09 CEST | Update | - |
| article html file updated | 29 June 2017 12:12 CEST | Update | - |
| article html file updated | 3 June 2017 08:29 CEST | Original file | - |
| article xml uploaded. | 3 June 2017 08:27 CEST | Update | https://www.mdpi.com/2073-4441/9/6/399/xml |
| article pdf uploaded. | 3 June 2017 08:27 CEST | Version of Record | https://www.mdpi.com/2073-4441/9/6/399/pdf |
