| article html file updated | 7 February 2020 13:55 CET | Update | https://www.mdpi.com/2075-4701/6/9/201 |
| article html file updated | 5 May 2019 06:02 CEST | Update | - |
| article html file updated | 27 March 2019 14:51 CET | Update | - |
| article html file updated | 27 September 2016 10:03 CEST | Update | - |
| article html file updated | 26 August 2016 08:18 CEST | Original file | - |
| article xml uploaded. | 26 August 2016 08:16 CEST | Update | https://www.mdpi.com/2075-4701/6/9/201/xml |
| article xml uploaded. | 26 August 2016 08:16 CEST | Original file | - |
| article pdf uploaded. | 26 August 2016 08:16 CEST | Version of Record | https://www.mdpi.com/2075-4701/6/9/201/pdf |
