| article html file updated | 8 February 2020 02:25 CET | Update | https://www.mdpi.com/1424-8220/17/4/693 |
| article html file updated | 24 September 2019 01:15 CEST | Update | - |
| article html file updated | 4 May 2019 04:39 CEST | Update | - |
| article html file updated | 29 April 2017 13:33 CEST | Update | - |
| article html file updated | 28 March 2017 14:32 CEST | Original file | - |
| article xml uploaded. | 28 March 2017 14:31 CEST | Original file | https://www.mdpi.com/1424-8220/17/4/693/xml |
| article pdf uploaded. | 28 March 2017 14:31 CEST | Version of Record | https://www.mdpi.com/1424-8220/17/4/693/pdf |
