| article html file updated | 7 February 2020 15:17 CET | Update | https://www.mdpi.com/2075-4701/6/9/227 |
| article html file updated | 5 May 2019 03:34 CEST | Update | - |
| article html file updated | 27 September 2016 10:13 CEST | Update | - |
| article html file updated | 21 September 2016 09:08 CEST | Original file | - |
| article xml uploaded. | 21 September 2016 09:06 CEST | Update | https://www.mdpi.com/2075-4701/6/9/227/xml |
| article xml uploaded. | 21 September 2016 09:06 CEST | Update | - |
| article xml uploaded. | 21 September 2016 09:06 CEST | Original file | - |
| article pdf uploaded. | 21 September 2016 09:06 CEST | Version of Record | https://www.mdpi.com/2075-4701/6/9/227/pdf |
