| article html file updated | 7 February 2020 16:21 CET | Update | https://www.mdpi.com/2311-7524/2/4/15 |
| article html file updated | 5 May 2019 01:40 CEST | Update | N/A |
| article html file updated | 14 October 2016 09:56 CEST | Original file | N/A |
| article xml uploaded. | 14 October 2016 09:55 CEST | Original file | https://www.mdpi.com/2311-7524/2/4/15/xml |
| article pdf uploaded. | 14 October 2016 09:55 CEST | Version of Record | https://www.mdpi.com/2311-7524/2/4/15/pdf |
