| article html file updated | 8 February 2020 02:36 CET | Update | https://www.mdpi.com/1424-8220/17/4/724 |
| article html file updated | 24 September 2019 02:17 CEST | Update | - |
| article html file updated | 4 May 2019 04:15 CEST | Update | - |
| article html file updated | 29 April 2017 13:41 CEST | Update | - |
| article html file updated | 31 March 2017 06:33 CEST | Original file | - |
| article xml uploaded. | 31 March 2017 06:32 CEST | Original file | https://www.mdpi.com/1424-8220/17/4/724/xml |
| article pdf uploaded. | 31 March 2017 06:32 CEST | Updated version of record | https://www.mdpi.com/1424-8220/17/4/724/pdf |
| article pdf uploaded. | 30 March 2017 14:04 CEST | Version of Record | https://www.mdpi.com/1424-8220/17/4/724/pdf-vor |
