| article html file updated | 7 February 2020 12:17 CET | Update | https://www.mdpi.com/2075-4701/6/8/172 |
| article html file updated | 5 May 2019 09:05 CEST | Update | - |
| article html file updated | 27 March 2019 11:22 CET | Update | - |
| article html file updated | 26 August 2016 06:34 CEST | Update | - |
| article html file updated | 25 July 2016 14:02 CEST | Original file | - |
| article xml uploaded. | 25 July 2016 13:59 CEST | Update | https://www.mdpi.com/2075-4701/6/8/172/xml |
| article pdf uploaded. | 25 July 2016 13:59 CEST | Version of Record | https://www.mdpi.com/2075-4701/6/8/172/pdf |
