| article html file updated | 7 February 2020 14:33 CET | Update | https://www.mdpi.com/2313-4321/1/2/271 |
| article html file updated | 5 May 2019 04:53 CEST | Update | N/A |
| article html file updated | 7 September 2016 06:37 CEST | Original file | N/A |
| article xml uploaded. | 7 September 2016 06:36 CEST | Original file | https://www.mdpi.com/2313-4321/1/2/271/xml |
| article pdf uploaded. | 7 September 2016 06:36 CEST | Version of Record | https://www.mdpi.com/2313-4321/1/2/271/pdf |
