| article html file updated | 8 February 2020 07:15 CET | Update | https://www.mdpi.com/2075-4701/7/6/201 |
| article html file updated | 25 September 2019 03:07 CEST | Update | - |
| article html file updated | 3 May 2019 19:23 CEST | Update | - |
| article html file updated | 28 June 2017 13:59 CEST | Update | - |
| article html file updated | 2 June 2017 07:53 CEST | Original file | - |
| article xml uploaded. | 2 June 2017 07:52 CEST | Original file | https://www.mdpi.com/2075-4701/7/6/201/xml |
| article pdf uploaded. | 2 June 2017 07:52 CEST | Version of Record | https://www.mdpi.com/2075-4701/7/6/201/pdf |
