| article html file updated | 12 February 2020 07:20 CET | Update | https://www.mdpi.com/2226-4787/7/2/39 |
| article html file updated | 5 July 2019 18:05 CEST | Update | N/A |
| article html file updated | 25 April 2019 07:51 CEST | Update | N/A |
| article html file updated | 24 April 2019 06:11 CEST | Original file | N/A |
| article pdf uploaded. | 24 April 2019 06:10 CEST | Version of Record | https://www.mdpi.com/2226-4787/7/2/39/pdf |
| article xml uploaded. | 24 April 2019 06:10 CEST | Update | https://www.mdpi.com/2226-4787/7/2/39/xml |
| article xml file uploaded | 24 April 2019 06:10 CEST | Original file | N/A |
