| article html file updated | 7 February 2020 14:35 CET | Update | https://www.mdpi.com/2075-4701/6/9/215 |
| article html file updated | 5 May 2019 04:49 CEST | Update | - |
| article html file updated | 27 September 2016 10:07 CEST | Update | - |
| article html file updated | 7 September 2016 12:04 CEST | Original file | - |
| article xml uploaded. | 7 September 2016 12:03 CEST | Update | https://www.mdpi.com/2075-4701/6/9/215/xml |
| article xml uploaded. | 7 September 2016 12:03 CEST | Original file | - |
| article pdf uploaded. | 7 September 2016 12:03 CEST | Version of Record | https://www.mdpi.com/2075-4701/6/9/215/pdf |
