| article html file updated | 7 February 2020 05:02 CET | Update | https://www.mdpi.com/2076-3425/6/1/8 |
| article html file updated | 5 May 2019 23:15 CEST | Update | - |
| article html file updated | 26 March 2019 21:44 CET | Update | - |
| article html file updated | 29 March 2016 11:13 CEST | Original file | - |
| article pdf uploaded. | 26 February 2016 10:03 CET | Version of Record | https://www.mdpi.com/2076-3425/6/1/8/pdf |
| article xml uploaded. | 26 February 2016 10:03 CET | Original file | https://www.mdpi.com/2076-3425/6/1/8/xml |
