| article html file updated | 7 February 2020 09:51 CET | Update | https://www.mdpi.com/2227-7080/4/2/17 |
| article html file updated | 5 May 2019 13:32 CEST | Update | - |
| article html file updated | 27 March 2019 06:54 CET | Update | - |
| article html file updated | 7 June 2016 12:24 CEST | Original file | - |
| article xml uploaded. | 7 June 2016 12:23 CEST | Original file | https://www.mdpi.com/2227-7080/4/2/17/xml |
| article pdf uploaded. | 7 June 2016 12:23 CEST | Version of Record | https://www.mdpi.com/2227-7080/4/2/17/pdf |
