| article html file updated | 8 February 2020 19:57 CET | Update | https://www.mdpi.com/2313-0105/3/4/34 |
| article html file updated | 28 September 2019 03:26 CEST | Update | - |
| article html file updated | 2 May 2019 17:49 CEST | Update | - |
| article html file updated | 31 October 2017 14:23 CET | Original file | - |
| article xml uploaded. | 31 October 2017 14:22 CET | Update | https://www.mdpi.com/2313-0105/3/4/34/xml |
| article xml uploaded. | 31 October 2017 14:22 CET | Original file | - |
| article pdf uploaded. | 31 October 2017 14:22 CET | Version of Record | https://www.mdpi.com/2313-0105/3/4/34/pdf |
