| article html file updated | 13 February 2020 08:51 CET | Update | https://www.mdpi.com/2227-9709/6/3/31 |
| article html file updated | 26 September 2019 17:30 CEST | Update | - |
| article html file updated | 19 September 2019 13:22 CEST | Update | - |
| article html file updated | 19 September 2019 13:04 CEST | Update | - |
| article html file updated | 19 September 2019 12:44 CEST | Original file | - |
| article pdf uploaded. | 19 September 2019 12:25 CEST | Updated version of record | https://www.mdpi.com/2227-9709/6/3/31/pdf |
| article xml uploaded. | 19 September 2019 12:25 CEST | Update | https://www.mdpi.com/2227-9709/6/3/31/xml |
| article xml file uploaded | 19 September 2019 12:25 CEST | Update | - |
| article pdf uploaded. | 10 August 2019 08:24 CEST | Version of Record | https://www.mdpi.com/2227-9709/6/3/31/pdf-vor |
| article xml file uploaded | 10 August 2019 08:24 CEST | Original file | - |
