| article html file updated | 7 February 2020 12:22 CET | Update | https://www.mdpi.com/2075-4701/6/8/177 |
| article html file updated | 5 May 2019 08:57 CEST | Update | - |
| article html file updated | 27 March 2019 11:31 CET | Update | - |
| article html file updated | 26 August 2016 06:37 CEST | Update | - |
| article html file updated | 27 July 2016 07:50 CEST | Original file | - |
| article xml uploaded. | 27 July 2016 07:48 CEST | Update | https://www.mdpi.com/2075-4701/6/8/177/xml |
| article pdf uploaded. | 27 July 2016 07:48 CEST | Version of Record | https://www.mdpi.com/2075-4701/6/8/177/pdf |
