| article html file updated | 7 February 2020 14:10 CET | Update | https://www.mdpi.com/2075-4701/6/9/207 |
| article html file updated | 5 May 2019 05:36 CEST | Update | - |
| article html file updated | 27 March 2019 15:25 CET | Update | - |
| article html file updated | 27 September 2016 10:04 CEST | Update | - |
| article html file updated | 31 August 2016 09:23 CEST | Original file | - |
| article xml uploaded. | 31 August 2016 09:21 CEST | Update | https://www.mdpi.com/2075-4701/6/9/207/xml |
| article xml uploaded. | 31 August 2016 09:21 CEST | Original file | - |
| article pdf uploaded. | 31 August 2016 09:21 CEST | Version of Record | https://www.mdpi.com/2075-4701/6/9/207/pdf |
