| article html file updated | 8 February 2020 01:19 CET | Update | https://www.mdpi.com/2313-0105/3/1/8 |
| article html file updated | 23 September 2019 19:02 CEST | Update | - |
| article html file updated | 4 May 2019 07:02 CEST | Update | - |
| article html file updated | 12 March 2017 11:07 CET | Original file | - |
| article xml uploaded. | 12 March 2017 11:06 CET | Original file | https://www.mdpi.com/2313-0105/3/1/8/xml |
| article pdf uploaded. | 12 March 2017 11:06 CET | Version of Record | https://www.mdpi.com/2313-0105/3/1/8/pdf |
