| article html file updated | 7 February 2020 20:31 CET | Update | https://www.mdpi.com/2311-7524/3/1/2 |
| article html file updated | 22 September 2019 16:25 CEST | Update | - |
| article html file updated | 4 May 2019 17:22 CEST | Update | - |
| article html file updated | 30 December 2016 05:38 CET | Original file | - |
| article xml uploaded. | 30 December 2016 05:37 CET | Original file | https://www.mdpi.com/2311-7524/3/1/2/xml |
| article pdf uploaded. | 30 December 2016 05:37 CET | Version of Record | https://www.mdpi.com/2311-7524/3/1/2/pdf |
