| article html file updated | 7 February 2020 14:38 CET | Update | https://www.mdpi.com/2075-4701/6/9/218 |
| article html file updated | 5 May 2019 04:44 CEST | Update | - |
| article html file updated | 27 September 2016 10:09 CEST | Update | - |
| article html file updated | 8 September 2016 09:10 CEST | Original file | - |
| article xml uploaded. | 8 September 2016 09:07 CEST | Update | https://www.mdpi.com/2075-4701/6/9/218/xml |
| article xml uploaded. | 8 September 2016 09:07 CEST | Update | - |
| article xml uploaded. | 8 September 2016 09:07 CEST | Original file | - |
| article pdf uploaded. | 8 September 2016 09:07 CEST | Version of Record | https://www.mdpi.com/2075-4701/6/9/218/pdf |
