| article html file updated | 8 February 2020 18:31 CET | Update | https://www.mdpi.com/2227-9040/5/4/29 |
| article html file updated | 2 May 2019 21:08 CEST | Update | - |
| article html file updated | 2 January 2018 13:35 CET | Update | - |
| article html file updated | 15 October 2017 10:00 CEST | Original file | - |
| article xml uploaded. | 15 October 2017 09:59 CEST | Original file | https://www.mdpi.com/2227-9040/5/4/29/xml |
| article pdf uploaded. | 15 October 2017 09:59 CEST | Version of Record | https://www.mdpi.com/2227-9040/5/4/29/pdf |
