| article html file updated | 8 February 2020 02:42 CET | Update | https://www.mdpi.com/1424-8220/17/4/734 |
| article html file updated | 24 September 2019 02:50 CEST | Update | - |
| article html file updated | 4 May 2019 04:03 CEST | Update | - |
| article html file updated | 29 April 2017 13:44 CEST | Update | - |
| article html file updated | 31 March 2017 14:18 CEST | Original file | - |
| article xml uploaded. | 31 March 2017 14:16 CEST | Update | https://www.mdpi.com/1424-8220/17/4/734/xml |
| article pdf uploaded. | 31 March 2017 14:16 CEST | Version of Record | https://www.mdpi.com/1424-8220/17/4/734/pdf |
