| article html file updated | 7 February 2020 14:07 CET | Update | https://www.mdpi.com/2075-4701/6/9/206 |
| article html file updated | 5 May 2019 05:40 CEST | Update | - |
| article html file updated | 27 March 2019 15:19 CET | Update | - |
| article html file updated | 27 September 2016 10:04 CEST | Update | - |
| article html file updated | 30 August 2016 13:09 CEST | Original file | - |
| article xml uploaded. | 30 August 2016 13:08 CEST | Original file | https://www.mdpi.com/2075-4701/6/9/206/xml |
| article pdf uploaded. | 30 August 2016 13:08 CEST | Version of Record | https://www.mdpi.com/2075-4701/6/9/206/pdf |
