| article html file updated | 12 February 2020 20:50 CET | Update | https://www.mdpi.com/2226-471X/4/2/43 |
| article html file updated | 20 June 2019 08:04 CEST | Original file | - |
| article pdf uploaded. | 20 June 2019 08:03 CEST | Updated version of record | https://www.mdpi.com/2226-471X/4/2/43/pdf |
| article xml uploaded. | 20 June 2019 08:03 CEST | Update | https://www.mdpi.com/2226-471X/4/2/43/xml |
| article xml file uploaded | 20 June 2019 08:03 CEST | Update | - |
| article pdf uploaded. | 19 June 2019 16:18 CEST | Version of Record | https://www.mdpi.com/2226-471X/4/2/43/pdf-vor |
| article xml file uploaded | 19 June 2019 16:18 CEST | Original file | - |
