| article html file updated | 12 February 2020 21:51 CET | Update | https://www.mdpi.com/2226-471X/4/2/45 |
| article html file updated | 25 June 2019 09:56 CEST | Original file | - |
| article pdf uploaded. | 25 June 2019 09:55 CEST | Version of Record | https://www.mdpi.com/2226-471X/4/2/45/pdf |
| article xml uploaded. | 25 June 2019 09:55 CEST | Update | https://www.mdpi.com/2226-471X/4/2/45/xml |
| article xml file uploaded | 25 June 2019 09:55 CEST | Original file | - |
