| article html file updated | 8 February 2020 22:54 CET | Update | https://www.mdpi.com/2073-4441/9/12/939 |
| article html file updated | 28 September 2019 22:24 CEST | Update | - |
| article html file updated | 2 May 2019 11:09 CEST | Update | - |
| article html file updated | 18 April 2019 08:47 CEST | Update | - |
| article html file updated | 2 January 2018 16:48 CET | Update | - |
| article html file updated | 2 December 2017 07:41 CET | Original file | - |
| article xml uploaded. | 2 December 2017 07:40 CET | Update | https://www.mdpi.com/2073-4441/9/12/939/xml |
| article xml uploaded. | 2 December 2017 07:40 CET | Original file | - |
| article pdf uploaded. | 2 December 2017 07:40 CET | Version of Record | https://www.mdpi.com/2073-4441/9/12/939/pdf |
