| article html file updated | 12 February 2020 20:22 CET | Update | https://www.mdpi.com/2227-7102/9/2/147 |
| article html file updated | 4 July 2019 18:08 CEST | Update | N/A |
| article html file updated | 18 June 2019 09:09 CEST | Original file | N/A |
| article pdf uploaded. | 18 June 2019 09:07 CEST | Version of Record | https://www.mdpi.com/2227-7102/9/2/147/pdf |
| article xml uploaded. | 18 June 2019 09:07 CEST | Update | https://www.mdpi.com/2227-7102/9/2/147/xml |
| article xml file uploaded | 18 June 2019 09:07 CEST | Original file | N/A |
