| article html file updated | 8 February 2020 18:34 CET | Update | https://www.mdpi.com/2313-0105/3/4/32 |
| article html file updated | 2 May 2019 21:02 CEST | Update | - |
| article html file updated | 16 October 2017 13:42 CEST | Original file | - |
| article xml uploaded. | 16 October 2017 13:41 CEST | Original file | https://www.mdpi.com/2313-0105/3/4/32/xml |
| article pdf uploaded. | 16 October 2017 13:41 CEST | Version of Record | https://www.mdpi.com/2313-0105/3/4/32/pdf |
