| article html file updated | 27 August 2018 08:48 CEST | Update | https://www.mdpi.com/2076-2607/4/1/2 |
| article html file updated | 20 September 2016 11:46 CEST | Update | - |
| article html file updated | 12 July 2016 04:25 CEST | Original file | - |
| article pdf uploaded. | 4 January 2016 12:00 CET | Version of Record | https://www.mdpi.com/2076-2607/4/1/2/pdf |
| article xml uploaded. | 4 January 2016 12:00 CET | Original file | https://www.mdpi.com/2076-2607/4/1/2/xml |
