| article html file updated | 12 February 2020 20:22 CET | Update | https://www.mdpi.com/2227-7102/9/2/139 |
| article html file updated | 22 October 2019 01:34 CEST | Update | - |
| article html file updated | 4 July 2019 18:07 CEST | Update | - |
| article html file updated | 18 June 2019 08:51 CEST | Original file | - |
| article pdf uploaded. | 18 June 2019 08:50 CEST | Version of Record | https://www.mdpi.com/2227-7102/9/2/139/pdf |
| article xml uploaded. | 18 June 2019 08:50 CEST | Update | https://www.mdpi.com/2227-7102/9/2/139/xml |
| article xml file uploaded | 18 June 2019 08:50 CEST | Original file | - |
