| article html file updated | 12 February 2020 06:55 CET | Update | https://www.mdpi.com/2409-9287/4/2/18 |
| article html file updated | 25 April 2019 08:30 CEST | Update | N/A |
| article html file updated | 22 April 2019 08:57 CEST | Original file | N/A |
| article pdf uploaded. | 22 April 2019 08:55 CEST | Version of Record | https://www.mdpi.com/2409-9287/4/2/18/pdf |
| article xml uploaded. | 22 April 2019 08:55 CEST | Update | https://www.mdpi.com/2409-9287/4/2/18/xml |
| article xml file uploaded | 22 April 2019 08:55 CEST | Original file | N/A |
