| article html file updated | 11 February 2020 06:23 CET | Update | https://www.mdpi.com/2076-0752/8/1/6 |
| article html file updated | 27 April 2019 12:07 CEST | Update | - |
| article html file updated | 13 April 2019 08:06 CEST | Update | - |
| article html file updated | 2 April 2019 21:25 CEST | Update | - |
| article html file updated | 2 April 2019 11:37 CEST | Update | - |
| article html file updated | 2 January 2019 13:48 CET | Original file | - |
| article pdf uploaded. | 2 January 2019 13:46 CET | Version of Record | https://www.mdpi.com/2076-0752/8/1/6/pdf |
| article xml uploaded. | 2 January 2019 13:46 CET | Update | https://www.mdpi.com/2076-0752/8/1/6/xml |
| article xml file uploaded | 2 January 2019 13:46 CET | Original file | - |
