| article html file updated | 12 February 2020 16:16 CET | Update | https://www.mdpi.com/2226-471X/4/2/30 |
| article html file updated | 20 October 2019 23:53 CEST | Update | - |
| article html file updated | 30 May 2019 05:18 CEST | Original file | - |
| article pdf uploaded. | 30 May 2019 05:17 CEST | Version of Record | https://www.mdpi.com/2226-471X/4/2/30/pdf |
| article xml uploaded. | 30 May 2019 05:17 CEST | Update | https://www.mdpi.com/2226-471X/4/2/30/xml |
| article xml file uploaded | 30 May 2019 05:17 CEST | Original file | - |
