| article html file updated | 14 February 2020 01:01 CET | Update | https://www.mdpi.com/2227-7072/7/4/60 |
| article html file updated | 31 December 2019 06:08 CET | Update | - |
| article html file updated | 18 October 2019 11:30 CEST | Original file | - |
| article pdf uploaded. | 18 October 2019 11:28 CEST | Updated version of record | https://www.mdpi.com/2227-7072/7/4/60/pdf |
| article xml uploaded. | 18 October 2019 11:28 CEST | Update | https://www.mdpi.com/2227-7072/7/4/60/xml |
| article xml file uploaded | 18 October 2019 11:28 CEST | Update | - |
| article pdf uploaded. | 15 October 2019 12:42 CEST | Version of Record | https://www.mdpi.com/2227-7072/7/4/60/pdf-vor |
| article xml file uploaded | 15 October 2019 12:42 CEST | Original file | - |
